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Recognised as Colour

#17010A

  • #17010A
  • Red
  • Dark
  • Nearest: Black

#17010A is a red with RGB values 23, 1, 10 and HSL 335°, 92%, 5%. It is a dark colour, so white text on it reaches 20.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#17010A#17010A
HEX#17010A
RGBrgb(23, 1, 10)
RGB (0–1)0.0902, 0.0039, 0.0392
RGB percentages9%, 0.4%, 3.9%
HSLhsl(335.5, 91.7%, 4.7%)
HSV / HSBhsv(335.5, 95.7%, 9%)
CMYK0%, 95.7%, 56.5%, 91%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,507,594
CSS custom property--colour: #17010A;

Brightness & contrast

Relative luminance0.00226WCAG 2.x, 0 is black and 1 is white
Perceived brightness13 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 20.09:1
Contrast with white20.09:1WCAG normal text: AAA
Contrast with black1.05:1WCAG normal text: Fail
Greyscale equivalent#060606
Inverted#E8FEF5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#03050Ano red cones; affects about 1% of men; ΔE 8.3 from the original
Deuteranopia#090909no green cones; the most common form, about 1% of men; ΔE 8.4 from the original
Tritanopia#1A0004no blue cones; rare, and affects men and women equally; ΔE 2.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text20.09:1WCAG large text: AAA
Contrast with black, large text1.05:1WCAG large text: Fail

Named colours

Black · ΔE 8.7Dark slate grey · ΔE 35.6Dim grey · ΔE 43.2Gray · ΔE 52.2Slate grey · ΔE 52.8Dark slateblue · ΔE 53.3
Nearest named CSS colourBlack (#000000)ΔE 8.66, clearly different but related
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#01170E
Analogous#170115, #170301
Triadic#0A1701, #010A17
Split complementary#011703, #011517
Tetradic#151701, #01170E, #030117

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DA0A5F
Lighter +30%#AA074A
Lighter +20%#790534
Lighter +10%#48031F
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#18000A
Less saturated −25%#14040B

Channel breakdown

R23
G1
B10
Red23 (9%)
Green1 (0.4%)
Blue10 (3.9%)
Hue335.45°
Saturation (HSL)91.67%
Lightness4.71%
Dominant channelRed
Hex per channelR 17 · G 01 · B 0A

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Every value on this page was computed from “17010a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.