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Recognised as Colour

#511F2A

  • #511F2A
  • Red
  • Dark
  • Nearest: Black

#511F2A is a red with RGB values 81, 31, 42 and HSL 347°, 45%, 22%. It is a dark colour, so white text on it reaches 13.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#511F2A#511F2A
HEX#511F2A
RGBrgb(81, 31, 42)
RGB (0–1)0.3176, 0.1216, 0.1647
RGB percentages31.8%, 12.2%, 16.5%
HSLhsl(346.8, 44.6%, 22%)
HSV / HSBhsv(346.8, 61.7%, 31.8%)
CMYK0%, 61.7%, 48.1%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,316,394
CSS custom property--colour: #511F2A;

Brightness & contrast

Relative luminance0.02896WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.3:1
Contrast with white13.3:1WCAG normal text: AAA
Contrast with black1.58:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#AEE0D5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#29292Ano red cones; affects about 1% of men; ΔE 25.1 from the original
Deuteranopia#363329no green cones; the most common form, about 1% of men; ΔE 25.5 from the original
Tritanopia#581923no blue cones; rare, and affects men and women equally; ΔE 7.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.3:1WCAG large text: AAA
Contrast with black, large text1.58:1WCAG large text: Fail

Named colours

Black · ΔE 31.8Dim grey · ΔE 35.2Dark slate grey · ΔE 39Sienna · ΔE 39.8Brown · ΔE 40.4Saddle brown · ΔE 40.7
Nearest named CSS colourBlack (#000000)ΔE 31.79, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1F5146
Analogous#511F43, #512D1F
Triadic#2A511F, #1F2A51
Split complementary#1F512D, #1F4351
Tetradic#43511F, #1F5146, #2D1F51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C97386
Lighter +30%#BB4E66
Lighter +20%#9B3B50
Lighter +10%#762D3D
Darker −10%#2C1117
Darker −20%#070304
Darker −30%#000000
Darker −40%#000000
More saturated +25%#5F1122
Less saturated −25%#432D32

Channel breakdown

R81
G31
B42
Red81 (31.8%)
Green31 (12.2%)
Blue42 (16.5%)
Hue346.8°
Saturation (HSL)44.64%
Lightness21.96%
Dominant channelRed
Hex per channelR 51 · G 1F · B 2A

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Every value on this page was computed from “511f2a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.