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Recognised as Colour

#51391D

  • #51391D
  • Orange
  • Dark
  • Nearest: Dim grey

#51391D is a orange with RGB values 81, 57, 29 and HSL 32°, 47%, 22%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#51391D#51391D
HEX#51391D
RGBrgb(81, 57, 29)
RGB (0–1)0.3176, 0.2235, 0.1137
RGB percentages31.8%, 22.4%, 11.4%
HSLhsl(32.3, 47.3%, 21.6%)
HSV / HSBhsv(32.3, 64.2%, 31.8%)
CMYK0%, 29.6%, 64.2%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,323,037
CSS custom property--colour: #51391D;

Brightness & contrast

Relative luminance0.04764WCAG 2.x, 0 is black and 1 is white
Perceived brightness63 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.75:1
Contrast with white10.75:1WCAG normal text: AAA
Contrast with black1.95:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#AEC6E2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#413A1Ano red cones; affects about 1% of men; ΔE 9.2 from the original
Deuteranopia#47401Eno green cones; the most common form, about 1% of men; ΔE 9.5 from the original
Tritanopia#583332no blue cones; rare, and affects men and women equally; ΔE 16.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.75:1WCAG large text: AAA
Contrast with black, large text1.95:1WCAG large text: Fail

Named colours

Dim grey · ΔE 29.1Saddle brown · ΔE 29.8Dark slate grey · ΔE 31.8Sienna · ΔE 31.8Dark olivegreen · ΔE 31.9Black · ΔE 34.5
Nearest named CSS colourDim grey (#696969)ΔE 29.08, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1D3551
Analogous#511F1D, #4F511D
Triadic#1D5139, #391D51
Split complementary#1D4F51, #1F1D51
Tetradic#1D511F, #1D3551, #511D4F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBA16F
Lighter +30%#BE8849
Lighter +20%#9C6E38
Lighter +10%#77532A
Darker −10%#2B1F10
Darker −20%#060402
Darker −30%#000000
Darker −40%#000000
More saturated +25%#5F3A0F
Less saturated −25%#43382B

Channel breakdown

R81
G57
B29
Red81 (31.8%)
Green57 (22.4%)
Blue29 (11.4%)
Hue32.31°
Saturation (HSL)47.27%
Lightness21.57%
Dominant channelRed
Hex per channelR 51 · G 39 · B 1D

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Every value on this page was computed from “51391d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.