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Recognised as Colour

#37180A

  • #37180A
  • Orange
  • Dark
  • Nearest: Black

#37180A is a orange with RGB values 55, 24, 10 and HSL 19°, 69%, 13%. It is a dark colour, so white text on it reaches 16.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#37180A#37180A
HEX#37180A
RGBrgb(55, 24, 10)
RGB (0–1)0.2157, 0.0941, 0.0392
RGB percentages21.6%, 9.4%, 3.9%
HSLhsl(18.7, 69.2%, 12.7%)
HSV / HSBhsv(18.7, 81.8%, 21.6%)
CMYK0%, 56.4%, 81.8%, 78.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,610,634
CSS custom property--colour: #37180A;

Brightness & contrast

Relative luminance0.01487WCAG 2.x, 0 is black and 1 is white
Perceived brightness35.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.19:1
Contrast with white16.19:1WCAG normal text: AAA
Contrast with black1.3:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#C8E7F5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#201C09no red cones; affects about 1% of men; ΔE 16 from the original
Deuteranopia#282309no green cones; the most common form, about 1% of men; ΔE 15.9 from the original
Tritanopia#3D1215no blue cones; rare, and affects men and women equally; ΔE 9.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.19:1WCAG large text: AAA
Contrast with black, large text1.3:1WCAG large text: Fail

Named colours

Black · ΔE 24Dark slate grey · ΔE 36.9Dim grey · ΔE 37.9Saddle brown · ΔE 38.2Sienna · ΔE 40.5Maroon · ΔE 43.1
Nearest named CSS colourBlack (#000000)ΔE 24, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0A2937
Analogous#370A12, #372F0A
Triadic#0A3718, #180A37
Split complementary#0A372E, #0A1337
Tetradic#13370A, #0A2937, #2F0A37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DA6733
Lighter +30%#B85022
Lighter +20%#8D3E1A
Lighter +10%#622B12
Darker −10%#0C0502
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#3F1502
Less saturated −25%#2F1B12

Channel breakdown

R55
G24
B10
Red55 (21.6%)
Green24 (9.4%)
Blue10 (3.9%)
Hue18.67°
Saturation (HSL)69.23%
Lightness12.75%
Dominant channelRed
Hex per channelR 37 · G 18 · B 0A

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Every value on this page was computed from “37180a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.