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Colour

#42381B

  • #42381B
  • Orange
  • Dark
  • Nearest: Dark slate grey

#42381B is a orange with RGB values 66, 56, 27 and HSL 45°, 42%, 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

#42381B#42381B
HEX#42381B
RGBrgb(66, 56, 27)
RGB (0–1)0.2588, 0.2196, 0.1059
RGB percentages25.9%, 22%, 10.6%
HSLhsl(44.6, 41.9%, 18.2%)
HSV / HSBhsv(44.6, 59.1%, 25.9%)
CMYK0%, 15.2%, 59.1%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,339,739
CSS custom property--colour: #42381B;

Brightness & contrast

Relative luminance0.04066WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.58:1
Contrast with white11.58:1WCAG normal text: AAA
Contrast with black1.81:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#BDC7E4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3E3718no red cones; affects about 1% of men; ΔE 2 from the original
Deuteranopia#403A1Cno 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 16.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.58:1WCAG large text: AAA
Contrast with black, large text1.81:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 27.1Dim grey · ΔE 28.4Dark olivegreen · ΔE 28.4Black · ΔE 30.9Gray · ΔE 35.6Saddle brown · ΔE 36.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 27.09, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1B2542
Analogous#42251B, #38421B
Triadic#1B4238, #381B42
Split complementary#1B3842, #251B42
Tetradic#1B4225, #1B2542, #421B39

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C1AA68
Lighter +30%#AF9447
Lighter +20%#8A7539
Lighter +10%#66572A
Darker −10%#1E190C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#4E3E0F
Less saturated −25%#363227

Channel breakdown

R66
G56
B27
Red66 (25.9%)
Green56 (22%)
Blue27 (10.6%)
Hue44.62°
Saturation (HSL)41.94%
Lightness18.24%
Dominant channelRed
Hex per channelR 42 · G 38 · B 1B

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