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RGB spaces:
- Adobe (1998)
- Apple RGB
- BestRGB
- Beta RGB
- Bruce RGB
- CIE RGB
- ColorMatch
- DonRGB4
- eciRGB
- Ekta Space PS5
- Generic RGB (ColorSync default space on Mac OS X)
- HDTV (HD-CIF)
- NTSC
- PAL / SECAM
- ProPhoto
- SGI RGB
- SMPTE-C
- SMPTE-240M
- sRGB
- Wide Gamut
- Any user-defined custom space
Color Decks:
- British Standard 5252F (i.e. BS 5252F, which comprises
the colors referred to by BS 4800, BS 4900, BS 4901, BS 4902, BS 4903, BS
4904, and BS 6770)
- Federal Standard 595B (FED-STD-595B)
- Munsell Color System
- RAL CLASSIC
- User-defined list imported using the "BabelColor
CT&A Export" dialog of the
PatchTool program.
Input formats (for RGB spaces):
- RGB
- L*a*b* referenced to the illuminant of the input space
- L*a*b* referenced to illuminant D50
- L*u*v* referenced to the illuminant of the input space
- L*u*v* referenced to illuminant D50
- "xy" coordinates selected by clicking in the chromaticity diagram
- V-2.5: L*a*b*/L*u*v* input via an Eye-One colorimeter or
spectrometer (purchased separately)
Output formats:
- RGB (see note 1)
- Hex # (Hexadecimal equivalent of RGB) (see note 1)
- HSB (Hue-Saturation-Brightness) (see note 1)
- Munsell Hue Value and Chroma (HVC)
- L*a*b* referenced to the illuminant of the input space
- L*a*b* referenced to illuminant D50
- L*u*v* referenced to the illuminant of the input space
- L*u*v* referenced to illuminant D50
- L*C*h* based on either L*a*b* or L*u*v*
- "xy" coordinates shown in the chromaticity diagram
- xyY referenced to the illuminant of the input space
- XYZ referenced to the illuminant of the input space
- V-2.5+: Luminance (cd/m2)
or Illuminance (lux), as well as
the Correlated Color Temperature (CCT, in kelvin), when
using an Eye-One in emission or ambient measurement mode
Note 1 : Only shown for RGB spaces.
Color difference (DeltaE) formulas:
- DeltaE*ab (CIELAB color difference)
- DeltaE*uv (CIELUV color difference)
- CIE94
- CIE94-textile (with kL
parameter = 2)
- CMC(2:1) (for acceptability, pass/fail, measurements)
- CMC(1:1) (for perceptibility measurements)
- CIEDE2000
The above differences are shown only if the two spaces which are compared
have the same illuminant. However, the following color differences are
always computed:
- DeltaE*ab referenced to illuminant D50
- DeltaE*uv referenced to illuminant D50
- CIE94 referenced to illuminant D50
- CIE94-textile referenced to illuminant D50
- CMC(2:1) referenced to illuminant D50
- CMC(1:1) referenced to illuminant D50
- CIEDE2000 referenced to illuminant D50
In addition, the individual contributions of the following parameters are
available for all DeltaE formulas:
- DeltaL*, the lightness difference
- DeltaC*, the chroma difference
- DeltaH*, the hue difference
- Delta h*, the hue angle difference
Miscellaneous:
- The Bradford matrices formalism is used for chromatic adaptation
transforms. You can get the Bradford chromatic
adaptation matrices (direct and inverse) between many standard illuminants
as well as between your custom-defined illuminant and a standard
illuminants.
- Exhaustive numeric data describing and comparing the selected colors can be saved to a text file.
- A chromaticity diagram can be printed with or without numeric data.
- SWOP gamut or ColorChecker data determined with C, D50, or D65
illuminant can be overlaid on the chromaticity diagram.
-
The colors are shown in color patches translated, by default, to the native
display spaces of the computer platforms: Generic RGB in Mac OS X, Apple RGB in Mac OS
8-9, and sRGB in Windows. The display space can also be user-selected.
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Define an RGB space with custom primaries, a
custom illuminant, and a custom gamma.
-
Enter the xyz chromaticity coordinates of the illuminant
directly or obtain the coordinates
of any D-series (D50, D93, etc.) or blackbody illuminant by simply
entering the source temperature, in kelvin (Ex.: 9300 K for D93).
- Gamma can be either a single parameter or a multi-parameters function,
as defined for some standard spaces such as NTSC;
all parameters are fully customizable.
- Get the coefficients of the Bradford chromatic adaptation
matrix between your custom illuminant and many standard illuminants. You can
also get the inverse matrix coefficients.
- Export a spreadsheet savvy text report that
contains all the parameters required to define and compute the custom RGB
space coordinates (includes the XYZ-to-RGB and RGB-to-XYZ matrices).
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Density tools:
- Reflection density, with Absolute or Paper White base
- Dot / Tone (Dot Area): Murray-Davies or
Yule-Nielson formulas; user-adjustable n Factor
- Apparent Trap: Preucil (GATF) or Brunner
formulas
- Print Contrast, with Absolute or Paper White base
- Hue error - Grayness - Saturation, with Absolute or Paper
White base
- Density standards:
- ANSI Status A, E, I and T
- DIN and DIN NB
- ISO Status I (SPI)
- Manual or Automatic CMYK filter selection
- Up to five measurements per tool; get the average; select
one measurement, or the average, as a reference.
- Export a report formatted for a spreadsheet and a word
processor.
Metamerism tools:
- Color Inconstancy Index (CII): color stability of a
single sample under one illuminant relative to a reference illuminant
(Default reference: D65, user-selectable among 12 preset illuminants or a
locally measured ambient illuminant); expressed as a color
difference; user-selectable color difference formula; computed as per
CIECAT02.
- Special Metamerism Index (SMI): the color
difference between two samples under an illuminant can be considered an SMI
if the two samples match under another illuminant; user-selectable color
difference formula.
- Metamerism index: Hunter Metamerism Index; based
on the data from two samples and two illuminants; the samples do not need to
match under any illuminant; CIELAB color difference formula.
- Observer: 2 degree (CIE 1931) and 10 degree (CIE 1964).
- Optional user-measured ambient illuminant, with
illuminance data and Correlated Color Temperature (CCT).
- Color difference formula:
- CIELAB
- CIE94, i.e CIE94(1:1)
- CIE94 textile, i.e. CIE94(2:1)
- CIE94(2:2) (recommended by Berns for metamerism
analysis)
- CMC(2:1)
- CMC(1:1)
- CIEDE2000
- Illuminant selection:
- A, B, C
- D50, D55, D60, D65, D75
- E
- F2, F7, F11
- User-measured ambient illuminant (requires an Eye-One
with an ambient diffuser adapter)
- Export a report formatted for a spreadsheet and a word
processor.
RAL tool:
- Reflectance sample measurement presented in RAL DESIGN
Hue-Lightness-Chroma (HLC) notation.
- L*a*b* and L*C*h* (D65, 10 degree Observer) also
displayed.
Graph tools:
- Acquire and compare two spectrums.
- Measurement modes: emission, ambient, reflectance
(the mode can be different for each spectrum; ambient not supported by all
Eye-One versions)
- Absolute or normalized scales, with zoom
- Basic mathematical operations on spectrums: ADD, AVERAGE,
SUBTRACT, MULTIPLY
- Compare measured ambient spectrums with theoretical
spectrums of same illuminance.
- Get the illuminance (lux) and Correlated Color
Temperature (CCT, in kelvin) of ambient sources.
- Get the luminance (cd/m2)
of emission sources.
- Observe coordinates data by moving the mouse over the
spectrums.
- Obtain color space data for each spectrum:
- L*a*b* and L*C*h* (ab)
- L*u*v* and L*C*h* (uv)
- XYZ
- xyY
- Observer: 2 degree (CIE 1931) and 10 degree (CIE 1964)
- Illuminant:
- A, B, C
- D50, D55, D60, D75, D93
- E
- F2, F7, F11
- Color difference formula:
- CIELAB
- CIE94, i.e CIE94(1:1)
- CIE94 textile, i.e. CIE94(2:1)
- CMC(2:1)
- CMC(1:1)
- CIEDE2000
- Export a report formatted for a spreadsheet and a word
processor.
- Export an image of the spectrums (Windows: BMP or JPG;
Mac: PICT).
ISO 3664+ tools:
- Based on the measuring conditions of ISO 3664 to which it
adds many user-selectable conditions.
- ISO 3664 Viewing Conditions:
- P1: Prints: Critical comparison (requires an Eye-One with
an ambient diffuser adapter)
- P2: Prints: Practical appraisal (requires an Eye-One with
an ambient diffuser adapter)
- T1: Transparencies (direct viewing)
- Color monitors (the brightness uniformity is based on the
nine positions defined in ISO 12646)
- Measurements:
- Brightness
- Chromaticity: u'v' Uniform Chromaticity Scale (UCS,
CIE 1976), 10 degree Observer (CIE 1964)
- Correlated Color Temperature (CCT), in kelvin
- Color Rendering Index (CRI): CIE 13; also provides
the index of each sample
- Daylight simulator Metamerism Index (MI) and
Quality Grade: CIE S 012
- Brightness uniformity; up to nine positions can be
measured
- Chromaticity "Target center":
- D50 for "P1", "P2" and "T1" (ISO 3664)
- D65 for "Color monitors" (ISO 3664)
- 2856 K, 3500 K, 4100 K, 4700, 5000 K (non ISO 3664)
- D55, D60, D75, D93 (non ISO 3664)
- CRI "Reference Illuminant":
- D50 for "P1", "P2" and "T1" (ISO 3664)
- 2856 K, 3500 K, 4100 K, 4700, 5000 K (non ISO 3664)
- D55, D65, D75 (non ISO 3664)
- Automatically assigned from the measured color
temperature (CCT)
- MI and Quality Grade "Reference Illuminant":
- D50 for "P1", "P2" and "T1" (ISO 3664)
- D55, D65, D75 (non ISO 3664)
- Up to nine measurements can be recorded for each viewing
condition.
- Export a report formatted for a spreadsheet and a word
processor.
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System requirements
Windows:
- Minimum:
- V-2.7.1: Windows 98
- V-2.8+: Windows 2000
- 250 MHz
- 64
MB RAM
- 800 x 600 display, 16 bit color
- Recommended:
- Windows 2000 / XP / Vista
- 700+ MHz
- 256+ MB RAM (1024+ MB for Vista)
- 1024 x 768 display, 32 bit
color
- Calibrated display
- Help file:
- Stored in
HTML Help format, which requires
Internet Explorer 4.0 or above.
Mac OS:
- Minimum:
- V-2.1: Mac OS 8
- V-2.5+ (with Spectral tools):
Mac OS X
- 250 MHz
- 64
MB RAM
- 800 x 600 display, 16 bit color
- Recommended:
- V-2.1: Mac OS 9.2+
- V-2.5+ (with Spectral tools): Mac OS 10.2+
- 700+ MHz
- 256+ MB RAM
- 1024 x 768
display, 32 bit color
- Calibrated display
- Compatible with:
- PowerPC and Intel Mac
- The Windows version is compatible with Windows OS on dual boot
Mac.
- Help file:
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