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Recognised as Colour

#423F19

  • #423F19
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#423F19 is a yellow with RGB values 66, 63, 25 and HSL 56°, 45%, 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

#423F19#423F19
HEX#423F19
RGBrgb(66, 63, 25)
RGB (0–1)0.2588, 0.2471, 0.098
RGB percentages25.9%, 24.7%, 9.8%
HSLhsl(55.6, 45.1%, 17.8%)
HSV / HSBhsv(55.6, 62.1%, 25.9%)
CMYK0%, 4.5%, 62.1%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,341,529
CSS custom property--colour: #423F19;

Brightness & contrast

Relative luminance0.04783WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.73:1
Contrast with white10.73:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#BDC0E6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#443D15no red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#463F1Bno green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#473B37no blue cones; rare, and affects men and women equally; ΔE 21.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.73:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Dark olivegreen · ΔE 22.6Dark slate grey · ΔE 28.5Dim grey · ΔE 30.1Black · ΔE 35.4Gray · ΔE 36.4Saddle brown · ΔE 37.6
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 22.59, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#191C42
Analogous#422B19, #314219
Triadic#19423F, #3F1942
Split complementary#193042, #2B1942
Tetradic#19422B, #191C42, #421931

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C4BD63
Lighter +30%#B1A943
Lighter +20%#8C8635
Lighter +10%#676227
Darker −10%#1D1C0B
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#4D490E
Less saturated −25%#373524

Channel breakdown

R66
G63
B25
Red66 (25.9%)
Green63 (24.7%)
Blue25 (9.8%)
Hue55.61°
Saturation (HSL)45.05%
Lightness17.84%
Dominant channelRed
Hex per channelR 42 · G 3F · B 19

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Every value on this page was computed from “423f19” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.