Recognised as Colour
#C7B221
- #C7B221
- Yellow
- Dark
- Nearest: Goldenrod
#C7B221 is a yellow with RGB values 199, 178, 33 and HSL 52°, 72%, 45%. It is a dark colour, so black text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Goldenrod.
Colour values
#C7B221#C7B221
HEX#C7B221
RGBrgb(199, 178, 33)
RGB (0–1)0.7804, 0.698, 0.1294
RGB percentages78%, 69.8%, 12.9%
HSLhsl(52.4, 71.6%, 45.5%)
HSV / HSBhsv(52.4, 83.4%, 78%)
CMYK0%, 10.6%, 83.4%, 22%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,087,265
CSS custom property--colour: #C7B221;
Brightness & contrast
Relative luminance0.44093WCAG 2.x, 0 is black and 1 is white
Perceived brightness174.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.82:1
Contrast with white2.14:1WCAG normal text: Fail
Contrast with black9.82:1WCAG normal text: AAA
Greyscale equivalent#ACACAC
Inverted#384DDE
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.14:1WCAG large text: Fail
Contrast with black, large text9.82:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#2136C7
Analogous#C75F21, #89C721
Triadic#21C7B2, #B221C7
Split complementary#2189C7, #5F21C7
Tetradic#21C75F, #2136C7, #C72189
Tints, shades & saturation
Channel breakdown
R199
G178
B33
Red199 (78%)
Green178 (69.8%)
Blue33 (12.9%)
Hue52.41°
Saturation (HSL)71.55%
Lightness45.49%
Dominant channelRed
Hex per channelR C7 · G B2 · B 21
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Also reads as
C7B221 (chemical formula)
- Formula
- 2,473.087 g/mol
- 228 atoms
C7B221 has a molar mass of 2,473.087 g/mol, made up of 228 atoms across 2 elements: 7 × C, 221 × B.
Molar mass
Molar mass2,473.087 g/mol
Total atoms per molecule228
Distinct elements2
Mass of one molecule4.1066576 × 10^-21 g
Molecules per gram2.4350703 × 10^20
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
C3.4%
B96.6%
Carbon (C × 7)84.077 g/mol, 3.4%
Boron (B × 221)2,389.01 g/mol, 96.6%
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