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Recognised as Colour

#100A0A

  • #100A0A
  • Red
  • Dark
  • Nearest: Black

#100A0A is a red with RGB values 16, 10, 10 and HSL 0°, 23%, 5%. It is a dark colour, so white text on it reaches 19.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#100A0A#100A0A
HEX#100A0A
RGBrgb(16, 10, 10)
RGB (0–1)0.0627, 0.0392, 0.0392
RGB percentages6.3%, 3.9%, 3.9%
HSLhsl(0, 23.1%, 5.1%)
HSV / HSBhsv(0, 37.5%, 6.3%)
CMYK0%, 37.5%, 37.5%, 93.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,051,146
CSS custom property--colour: #100A0A;

Brightness & contrast

Relative luminance0.00349WCAG 2.x, 0 is black and 1 is white
Perceived brightness12.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.63:1
Contrast with white19.63:1WCAG normal text: AAA
Contrast with black1.07:1WCAG normal text: Fail
Greyscale equivalent#0B0B0B
Inverted#EFF5F5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0B0B0Ano red cones; affects about 1% of men; ΔE 2 from the original
Deuteranopia#0C0C0Ano green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#11090Ano blue cones; rare, and affects men and women equally; ΔE 0.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.63:1WCAG large text: AAA
Contrast with black, large text1.07:1WCAG large text: Fail

Named colours

Black · ΔE 3.7Dark slate grey · ΔE 31.5Dim grey · ΔE 41.3Gray · ΔE 50.5Slate grey · ΔE 51.1Dark olivegreen · ΔE 53.4
Nearest named CSS colourBlack (#000000)ΔE 3.71, a close match
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0A1010
Analogous#100A0D, #100D0A
Triadic#0A100A, #0A0A10
Split complementary#0A100D, #0A0D10
Tetradic#0D100A, #0A1010, #0D0A10

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8E5858
Lighter +30%#6E4545
Lighter +20%#4F3131
Lighter +10%#2F1E1E
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#130707
Less saturated −25%#0D0D0D

Channel breakdown

R16
G10
B10
Red16 (6.3%)
Green10 (3.9%)
Blue10 (3.9%)
Hue0°
Saturation (HSL)23.08%
Lightness5.1%
Dominant channelRed
Hex per channelR 10 · G 0A · B 0A

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Every value on this page was computed from “100a0a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.