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Recognised as Colour

#F15B0A

  • #F15B0A
  • Orange
  • Dark
  • Nearest: Orange red

#F15B0A is a orange with RGB values 241, 91, 10 and HSL 21°, 92%, 49%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#F15B0A#F15B0A
HEX#F15B0A
RGBrgb(241, 91, 10)
RGB (0–1)0.9451, 0.3569, 0.0392
RGB percentages94.5%, 35.7%, 3.9%
HSLhsl(21, 92%, 49.2%)
HSV / HSBhsv(21, 95.9%, 94.5%)
CMYK0%, 62.2%, 95.9%, 5.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,817,482
CSS custom property--colour: #F15B0A;

Brightness & contrast

Relative luminance0.26205WCAG 2.x, 0 is black and 1 is white
Perceived brightness149.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.24:1
Contrast with white3.36:1WCAG normal text: Fail
Contrast with black6.24:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#0EA4F5

Colour vision & accessibility

Protanopia#877700no red cones; affects about 1% of men; ΔE 61.1 from the original
Deuteranopia#AC9900no green cones; the most common form, about 1% of men; ΔE 61.2 from the original
Tritanopia#FF2F4Fno blue cones; rare, and affects men and women equally; ΔE 37.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.36:1WCAG large text: AA
Contrast with black, large text6.24:1WCAG large text: AAA

Named colours

Nearest named CSS colourOrange red (#FF4500)ΔE 13.18, a distinctly different colour
Hue familyorange
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#0AA0F1
Analogous#F10A2D, #F1CE0A
Triadic#0AF15B, #5B0AF1
Split complementary#0AF1CE, #0A2DF1
Tetradic#2DF10A, #0AA0F1, #CE0AF1

Tints, shades & saturation

Lighter +40%#FDDCCA
Lighter +30%#FBBB99
Lighter +20%#F99B68
Lighter +10%#F77A37
Darker −10%#C04908
Darker −20%#8F3606
Darker −30%#5E2404
Darker −40%#2D1102
More saturated +25%#FB5800
Less saturated −25%#D26429

Channel breakdown

R241
G91
B10
Red241 (94.5%)
Green91 (35.7%)
Blue10 (3.9%)
Hue21.04°
Saturation (HSL)92.03%
Lightness49.22%
Dominant channelRed
Hex per channelR F1 · G 5B · B 0A

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Every value on this page was computed from “f15b0a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.