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Colour

#423F03

  • #423F03
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#423F03 is a yellow with RGB values 66, 63, 3 and HSL 57°, 91%, 14%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Dark olivegreen.

Colour values

#423F03#423F03
HEX#423F03
RGBrgb(66, 63, 3)
RGB (0–1)0.2588, 0.2471, 0.0118
RGB percentages25.9%, 24.7%, 1.2%
HSLhsl(57.1, 91.3%, 13.5%)
HSV / HSBhsv(57.1, 95.5%, 25.9%)
CMYK0%, 4.5%, 95.5%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,341,507
CSS custom property--colour: #423F03;

Brightness & contrast

Relative luminance0.0472WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.8:1
Contrast with white10.8:1WCAG normal text: AAA
Contrast with black1.94:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#BDC0FC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#463C00no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#473E08no green cones; the most common form, about 1% of men; ΔE 3.9 from the original
Tritanopia#483A34no blue cones; rare, and affects men and women equally; ΔE 29.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.8:1WCAG large text: AAA
Contrast with black, large text1.94:1WCAG large text: Fail

Named colours

Dark olivegreen · ΔE 20.8Saddle brown · ΔE 35.4Olive · ΔE 35.5Dark slate grey · ΔE 38Dim grey · ΔE 38.7Dark green · ΔE 39.5
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 20.84, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#030642
Analogous#421F03, #264203
Triadic#03423F, #3F0342
Split complementary#032642, #1F0342
Tetradic#03421F, #030642, #420326

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F5EA1C
Lighter +30%#D4CB0A
Lighter +20%#A49C07
Lighter +10%#736E05
Darker −10%#111001
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#454200
Less saturated −25%#39370C

Channel breakdown

R66
G63
B3
Red66 (25.9%)
Green63 (24.7%)
Blue3 (1.2%)
Hue57.14°
Saturation (HSL)91.3%
Lightness13.53%
Dominant channelRed
Hex per channelR 42 · G 3F · B 03

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Every value on this page was computed from “423f03” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.