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Recognised as Colour

#423F18

  • #423F18
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#423F18 is a yellow with RGB values 66, 63, 24 and HSL 56°, 47%, 18%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#423F18#423F18
HEX#423F18
RGBrgb(66, 63, 24)
RGB (0–1)0.2588, 0.2471, 0.0941
RGB percentages25.9%, 24.7%, 9.4%
HSLhsl(55.7, 46.7%, 17.6%)
HSV / HSBhsv(55.7, 63.6%, 25.9%)
CMYK0%, 4.5%, 63.6%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,341,528
CSS custom property--colour: #423F18;

Brightness & contrast

Relative luminance0.04779WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.74:1
Contrast with white10.74:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#BDC0E7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#453D14no red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#463F1Ano green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#473B36no blue cones; rare, and affects men and women equally; ΔE 21 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.74:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark olivegreen · ΔE 22.4Dark slate grey · ΔE 29Dim grey · ΔE 30.5Black · ΔE 35.7Gray · ΔE 36.8Saddle brown · ΔE 37.4
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 22.37, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#181B42
Analogous#422A18, #304218
Triadic#18423F, #3F1842
Split complementary#183042, #2A1842
Tetradic#18422A, #181B42, #421830

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C5BE61
Lighter +30%#B2AA41
Lighter +20%#8D8633
Lighter +10%#676326
Darker −10%#1D1B0A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#4D490D
Less saturated −25%#373523

Channel breakdown

R66
G63
B24
Red66 (25.9%)
Green63 (24.7%)
Blue24 (9.4%)
Hue55.71°
Saturation (HSL)46.67%
Lightness17.65%
Dominant channelRed
Hex per channelR 42 · G 3F · B 18

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Every value on this page was computed from “423f18” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.