Recognised as Colour
#C25B21
- #C25B21
- Orange
- Dark
- Nearest: Chocolate
#C25B21 is a orange with RGB values 194, 91, 33 and HSL 22°, 71%, 45%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Chocolate.
Colour values
#C25B21#C25B21
HEX#C25B21
RGBrgb(194, 91, 33)
RGB (0–1)0.7608, 0.3569, 0.1294
RGB percentages76.1%, 35.7%, 12.9%
HSLhsl(21.6, 70.9%, 44.5%)
HSV / HSBhsv(21.6, 83%, 76.1%)
CMYK0%, 53.1%, 83%, 23.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,737,313
CSS custom property--colour: #C25B21;
Brightness & contrast
Relative luminance0.19061WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.81:1
Contrast with white4.36:1WCAG normal text: Fail
Contrast with black4.81:1WCAG normal text: AA
Greyscale equivalent#6D6D6D
Inverted#3DA4DE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.36:1WCAG large text: AA
Contrast with black, large text4.81:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2188C2
Analogous#C22138, #C2AB21
Triadic#21C25B, #5B21C2
Split complementary#21C2AC, #2137C2
Tetradic#37C221, #2188C2, #AC21C2
Tints, shades & saturation
Channel breakdown
R194
G91
B33
Red194 (76.1%)
Green91 (35.7%)
Blue33 (12.9%)
Hue21.61°
Saturation (HSL)70.93%
Lightness44.51%
Dominant channelRed
Hex per channelR C2 · G 5B · B 21
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Also reads as
C25B21 (chemical formula)
- Formula
- 527.285 g/mol
- 46 atoms
C25B21 has a molar mass of 527.285 g/mol, made up of 46 atoms across 2 elements: 25 × C, 21 × B.
Molar mass
Molar mass527.285 g/mol
Total atoms per molecule46
Distinct elements2
Mass of one molecule8.7557734 × 10^-22 g
Molecules per gram1.1421036 × 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
C56.9%
B43.1%
Carbon (C × 25)300.275 g/mol, 56.947%
Boron (B × 21)227.01 g/mol, 43.053%
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