Colour

#F63537

#F63537
Red
Dark
Nearest: Crimson

#F63537 is a red with RGB values 246, 53, 55 and HSL 359°, 91%, 59%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#F63537#F63537

HEX#F63537

RGBrgb(246, 53, 55)

RGB (0–1)0.9647, 0.2078, 0.2157

RGB percentages96.5%, 20.8%, 21.6%

HSLhsl(359.4, 91.5%, 58.6%)

HSV / HSBhsv(359.4, 78.5%, 96.5%)

CMYK0%, 78.5%, 77.6%, 3.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,135,479

CSS custom property--colour: #F63537;

Brightness & contrast

Relative luminance0.22415WCAG 2.x, 0 is black and 1 is white

Perceived brightness141.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.48:1

Contrast with white3.83:1WCAG normal text: Fail

Contrast with black5.48:1WCAG normal text: AA

Greyscale equivalent#5E5E5E

Inverted#09CAC8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#736834no red cones; affects about 1% of men; ΔE 76.3 from the original

Deuteranopia#A2912Eno green cones; the most common form, about 1% of men; ΔE 76.4 from the original

Tritanopia#FF0039no blue cones; rare, and affects men and women equally; ΔE 10.3 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.83:1WCAG large text: AA

Contrast with black, large text5.48:1WCAG large text: AAA

Named colours

Crimson · ΔE 14.5 Tomato · ΔE 15.1 Firebrick · ΔE 23 Red · ΔE 23.1 Orange red · ΔE 23.3 Coral · ΔE 28.6

Nearest named CSS colourCrimson (#DC143C)ΔE 14.54, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#35F6F4

Analogous#F63598, #F69435

Triadic#37F635, #3537F6

Split complementary#35F694, #3598F6

Tetradic#97F635, #35F6F4, #9335F6

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFF8F8

Lighter +30%#FDC7C8

Lighter +20%#FA9798

Lighter +10%#F86667

Darker −10%#ED0B0D

Darker −20%#BD080A

Darker −30%#8C0608

Darker −40%#5B0405

More saturated +25%#FF2C2E

Less saturated −25%#DC4F51

Channel breakdown

R246

G53

B55

Red246 (96.5%)

Green53 (20.8%)

Blue55 (21.6%)

Hue359.38°

Saturation (HSL)91.47%

Lightness58.63%

Dominant channelRed

Hex per channelR F6 · G 35 · B 37

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#F63537

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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