Recognised as Colour
#EF4143
- #EF4143
- Red
- Dark
- Nearest: Crimson
#EF4143 is a red with RGB values 239, 65, 67 and HSL 359°, 84%, 60%. 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
#EF4143#EF4143
HEX#EF4143
RGBrgb(239, 65, 67)
RGB (0–1)0.9373, 0.2549, 0.2627
RGB percentages93.7%, 25.5%, 26.3%
HSLhsl(359.3, 84.5%, 59.6%)
HSV / HSBhsv(359.3, 72.8%, 93.7%)
CMYK0%, 72.8%, 72%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,679,811
CSS custom property--colour: #EF4143;
Brightness & contrast
Relative luminance0.22537WCAG 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 5.51:1
Contrast with white3.81:1WCAG normal text: Fail
Contrast with black5.51:1WCAG normal text: AA
Greyscale equivalent#666666
Inverted#10BEBC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.81:1WCAG large text: AA
Contrast with black, large text5.51:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#41EFED
Analogous#EF419A, #EF9641
Triadic#43EF41, #4143EF
Split complementary#41EF96, #419AEF
Tetradic#9AEF41, #41EFED, #9641EF
Tints, shades & saturation
Channel breakdown
R239
G65
B67
Red239 (93.7%)
Green65 (25.5%)
Blue67 (26.3%)
Hue359.31°
Saturation (HSL)84.47%
Lightness59.61%
Dominant channelRed
Hex per channelR EF · G 41 · B 43
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