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Colour

#42381A

  • #42381A
  • Yellow
  • Dark
  • Nearest: Dark slate grey

#42381A is a yellow with RGB values 66, 56, 26 and HSL 45°, 43%, 18%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#42381A#42381A
HEX#42381A
RGBrgb(66, 56, 26)
RGB (0–1)0.2588, 0.2196, 0.102
RGB percentages25.9%, 22%, 10.2%
HSLhsl(45, 43.5%, 18%)
HSV / HSBhsv(45, 60.6%, 25.9%)
CMYK0%, 15.2%, 60.6%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,339,738
CSS custom property--colour: #42381A;

Brightness & contrast

Relative luminance0.04061WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.59:1
Contrast with white11.59:1WCAG normal text: AAA
Contrast with black1.81:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#BDC7E5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3E3717no red cones; affects about 1% of men; ΔE 2 from the original
Deuteranopia#403A1Bno green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#473431no blue cones; rare, and affects men and women equally; ΔE 17.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.59:1WCAG large text: AAA
Contrast with black, large text1.81:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 27.6Dark olivegreen · ΔE 28.2Dim grey · ΔE 28.8Black · ΔE 31.3Gray · ΔE 35.9Saddle brown · ΔE 36.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 27.55, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1A2442
Analogous#42241A, #38421A
Triadic#1A4238, #381A42
Split complementary#1A3842, #241A42
Tetradic#1A4224, #1A2442, #421A38

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3AB65
Lighter +30%#B09545
Lighter +20%#8B7637
Lighter +10%#675728
Darker −10%#1D190C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#4E3E0F
Less saturated −25%#373226

Channel breakdown

R66
G56
B26
Red66 (25.9%)
Green56 (22%)
Blue26 (10.2%)
Hue45°
Saturation (HSL)43.48%
Lightness18.04%
Dominant channelRed
Hex per channelR 42 · G 38 · B 1A

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Every value on this page was computed from “42381a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.