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Colour

#C52500

  • #C52500
  • Red
  • Dark
  • Nearest: Firebrick

#C52500 is a red with RGB values 197, 37, 0 and HSL 11°, 100%, 39%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C52500#C52500
HEX#C52500
RGBrgb(197, 37, 0)
RGB (0–1)0.7725, 0.1451, 0
RGB percentages77.3%, 14.5%, 0%
HSLhsl(11.3, 100%, 38.6%)
HSV / HSBhsv(11.3, 100%, 77.3%)
CMYK0%, 81.2%, 100%, 22.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,920,064
CSS custom property--colour: #C52500;

Brightness & contrast

Relative luminance0.13193WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.77:1
Contrast with white5.77:1WCAG normal text: AA
Contrast with black3.64:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#3ADAFF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B4F00no red cones; affects about 1% of men; ΔE 65.5 from the original
Deuteranopia#817200no green cones; the most common form, about 1% of men; ΔE 65 from the original
Tritanopia#DA0021no blue cones; rare, and affects men and women equally; ΔE 14.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.77:1WCAG large text: AAA
Contrast with black, large text3.64:1WCAG large text: AA

Named colours

Firebrick · ΔE 19.3Orange red · ΔE 20.9Tomato · ΔE 21.6Dark red · ΔE 22.9Red · ΔE 25Crimson · ΔE 25.3
Nearest named CSS colourFirebrick (#B22222)ΔE 19.34, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#00A0C5
Analogous#C5003E, #C58700
Triadic#00C525, #2500C5
Split complementary#00C588, #003DC5
Tetradic#3EC500, #00A0C5, #8700C5

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFA692
Lighter +30%#FF7D5F
Lighter +20%#FF542C
Lighter +10%#F82F00
Darker −10%#921B00
Darker −20%#5F1200
Darker −30%#2C0800
Darker −40%#000000
More saturated +25%#C52500
Less saturated −25%#AC3419

Channel breakdown

R197
G37
B0
Red197 (77.3%)
Green37 (14.5%)
Blue0 (0%)
Hue11.27°
Saturation (HSL)100%
Lightness38.63%
Dominant channelRed
Hex per channelR C5 · G 25 · B 00

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Every value on this page was computed from “c52500” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.