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Recognised as Colour

#2A0104

  • #2A0104
  • Red
  • Dark
  • Nearest: Black

#2A0104 is a red with RGB values 42, 1, 4 and HSL 356°, 95%, 8%. It is a dark colour, so white text on it reaches 19:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#2A0104#2A0104
HEX#2A0104
RGBrgb(42, 1, 4)
RGB (0–1)0.1647, 0.0039, 0.0157
RGB percentages16.5%, 0.4%, 1.6%
HSLhsl(355.6, 95.3%, 8.4%)
HSV / HSBhsv(355.6, 97.6%, 16.5%)
CMYK0%, 97.6%, 90.5%, 83.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,752,772
CSS custom property--colour: #2A0104;

Brightness & contrast

Relative luminance0.00523WCAG 2.x, 0 is black and 1 is white
Perceived brightness23 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.01:1
Contrast with white19.01:1WCAG normal text: AAA
Contrast with black1.1:1WCAG normal text: Fail
Greyscale equivalent#0A0A0A
Inverted#D5FEFB

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0C0A04no red cones; affects about 1% of men; ΔE 20.4 from the original
Deuteranopia#171303no green cones; the most common form, about 1% of men; ΔE 20.7 from the original
Tritanopia#2F0002no blue cones; rare, and affects men and women equally; ΔE 4.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.01:1WCAG large text: AAA
Contrast with black, large text1.1:1WCAG large text: Fail

Named colours

Black · ΔE 21.2Dark slate grey · ΔE 42.3Dim grey · ΔE 44.7Maroon · ΔE 47.7Saddle brown · ΔE 48.5Sienna · ΔE 50.1
Nearest named CSS colourBlack (#000000)ΔE 21.15, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#012A27
Analogous#2A0119, #2A1301
Triadic#042A01, #01042A
Split complementary#012A13, #01182A
Tetradic#182A01, #012A27, #12012A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F10617
Lighter +30%#BF0512
Lighter +20%#8E030D
Lighter +10%#5C0209
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2B0003
Less saturated −25%#250609

Channel breakdown

R42
G1
B4
Red42 (16.5%)
Green1 (0.4%)
Blue4 (1.6%)
Hue355.61°
Saturation (HSL)95.35%
Lightness8.43%
Dominant channelRed
Hex per channelR 2A · G 01 · B 04

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Every value on this page was computed from “2a0104” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.