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Recognised as Colour

#2A101C

  • #2A101C
  • Red
  • Dark
  • Nearest: Black

#2A101C is a red with RGB values 42, 16, 28 and HSL 332°, 45%, 11%. It is a dark colour, so white text on it reaches 17.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#2A101C#2A101C
HEX#2A101C
RGBrgb(42, 16, 28)
RGB (0–1)0.1647, 0.0627, 0.1098
RGB percentages16.5%, 6.3%, 11%
HSLhsl(332.3, 44.8%, 11.4%)
HSV / HSBhsv(332.3, 61.9%, 16.5%)
CMYK0%, 61.9%, 33.3%, 83.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,756,636
CSS custom property--colour: #2A101C;

Brightness & contrast

Relative luminance0.00947WCAG 2.x, 0 is black and 1 is white
Perceived brightness27.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.66:1
Contrast with white17.66:1WCAG normal text: AAA
Contrast with black1.19:1WCAG normal text: Fail
Greyscale equivalent#161616
Inverted#D5EFE3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#13161Cno red cones; affects about 1% of men; ΔE 15.2 from the original
Deuteranopia#1A1A1Bno green cones; the most common form, about 1% of men; ΔE 15.2 from the original
Tritanopia#2D0F14no blue cones; rare, and affects men and women equally; ΔE 6.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.66:1WCAG large text: AAA
Contrast with black, large text1.19:1WCAG large text: Fail

Named colours

Black · ΔE 17.7Dark slate grey · ΔE 35.3Dim grey · ΔE 39.1Dark slateblue · ΔE 46.8Gray · ΔE 47.6Slate grey · ΔE 48.3
Nearest named CSS colourBlack (#000000)ΔE 17.68, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#102A1E
Analogous#2A1029, #2A1110
Triadic#1C2A10, #101C2A
Split complementary#102A11, #10292A
Tetradic#292A10, #102A1E, #11102A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BB4B7F
Lighter +30%#993A66
Lighter +20%#742C4D
Lighter +10%#4F1E35
Darker −10%#050203
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#31091B
Less saturated −25%#23171D

Channel breakdown

R42
G16
B28
Red42 (16.5%)
Green16 (6.3%)
Blue28 (11%)
Hue332.31°
Saturation (HSL)44.83%
Lightness11.37%
Dominant channelRed
Hex per channelR 2A · G 10 · B 1C

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Every value on this page was computed from “2a101c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.