Recognised as Colour
#CB8B31
- #CB8B31
- Orange
- Dark
- Nearest: Peru
#CB8B31 is a orange with RGB values 203, 139, 49 and HSL 35°, 61%, 49%. It is a dark colour, so black text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Peru.
Colour values
#CB8B31#CB8B31
HEX#CB8B31
RGBrgb(203, 139, 49)
RGB (0–1)0.7961, 0.5451, 0.1922
RGB percentages79.6%, 54.5%, 19.2%
HSLhsl(35.1, 61.1%, 49.4%)
HSV / HSBhsv(35.1, 75.9%, 79.6%)
CMYK0%, 31.5%, 75.9%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,339,441
CSS custom property--colour: #CB8B31;
Brightness & contrast
Relative luminance0.31383WCAG 2.x, 0 is black and 1 is white
Perceived brightness154.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.28:1
Contrast with white2.89:1WCAG normal text: Fail
Contrast with black7.28:1WCAG normal text: AAA
Greyscale equivalent#929292
Inverted#3474CE
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.89:1WCAG large text: Fail
Contrast with black, large text7.28:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3171CB
Analogous#CB3E31, #BECB31
Triadic#31CB8B, #8B31CB
Split complementary#31BECB, #3E31CB
Tetradic#31CB3E, #3171CB, #CB31BE
Tints, shades & saturation
Channel breakdown
R203
G139
B49
Red203 (79.6%)
Green139 (54.5%)
Blue49 (19.2%)
Hue35.06°
Saturation (HSL)61.11%
Lightness49.41%
Dominant channelRed
Hex per channelR CB · G 8B · B 31
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Harmonies
Similar named colours
Also reads as
CB8B31 (chemical formula)
- Formula
- 433.601 g/mol
- 40 atoms
CB8B31 has a molar mass of 433.601 g/mol, made up of 40 atoms across 2 elements: 1 × C, 39 × B.
Molar mass
Molar mass433.601 g/mol
Total atoms per molecule40
Distinct elements2
Mass of one molecule7.200114 × 10^-22 g
Molecules per gram1.3888669 × 10^21
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
C2.8%
B97.2%
Carbon (C)12.011 g/mol, 2.77%
Boron (B × 39)421.59 g/mol, 97.23%
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