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Recognised as Colour

#220A0A

  • #220A0A
  • Red
  • Dark
  • Nearest: Black

#220A0A is a red with RGB values 34, 10, 10 and HSL 0°, 55%, 9%. It is a dark colour, so white text on it reaches 18.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#220A0A#220A0A
HEX#220A0A
RGBrgb(34, 10, 10)
RGB (0–1)0.1333, 0.0392, 0.0392
RGB percentages13.3%, 3.9%, 3.9%
HSLhsl(0, 54.5%, 8.6%)
HSV / HSBhsv(0, 70.6%, 13.3%)
CMYK0%, 70.6%, 70.6%, 86.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,230,794
CSS custom property--colour: #220A0A;

Brightness & contrast

Relative luminance0.00579WCAG 2.x, 0 is black and 1 is white
Perceived brightness20.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.82:1
Contrast with white18.82:1WCAG normal text: AAA
Contrast with black1.12:1WCAG normal text: Fail
Greyscale equivalent#0F0F0F
Inverted#DDF5F5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#100E0Ano red cones; affects about 1% of men; ΔE 11.4 from the original
Deuteranopia#161309no green cones; the most common form, about 1% of men; ΔE 11.7 from the original
Tritanopia#26070Ano blue cones; rare, and affects men and women equally; ΔE 4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.82:1WCAG large text: AAA
Contrast with black, large text1.12:1WCAG large text: Fail

Named colours

Black · ΔE 12.9Dark slate grey · ΔE 35.5Dim grey · ΔE 40.9Gray · ΔE 49.8Saddle brown · ΔE 51.4Slate grey · ΔE 51.5
Nearest named CSS colourBlack (#000000)ΔE 12.94, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0A2222
Analogous#220A16, #22160A
Triadic#0A220A, #0A0A22
Split complementary#0A2216, #0A1622
Tetradic#16220A, #0A2222, #160A22

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C03838
Lighter +30%#982D2D
Lighter +20%#712121
Lighter +10%#491616
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#280404
Less saturated −25%#1C1010

Channel breakdown

R34
G10
B10
Red34 (13.3%)
Green10 (3.9%)
Blue10 (3.9%)
Hue0°
Saturation (HSL)54.55%
Lightness8.63%
Dominant channelRed
Hex per channelR 22 · G 0A · B 0A

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Every value on this page was computed from “220a0a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.