Recognised as Colour
#EF3750
- #EF3750
- Red
- Dark
- Nearest: Crimson
#EF3750 is a red with RGB values 239, 55, 80 and HSL 352°, 85%, 58%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#EF3750#EF3750
HEX#EF3750
RGBrgb(239, 55, 80)
RGB (0–1)0.9373, 0.2157, 0.3137
RGB percentages93.7%, 21.6%, 31.4%
HSLhsl(351.8, 85.2%, 57.6%)
HSV / HSBhsv(351.8, 77%, 93.7%)
CMYK0%, 77%, 66.5%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,677,264
CSS custom property--colour: #EF3750;
Brightness & contrast
Relative luminance0.21662WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.33:1
Contrast with white3.94:1WCAG normal text: Fail
Contrast with black5.33:1WCAG normal text: AA
Greyscale equivalent#606060
Inverted#10C8AF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.94:1WCAG large text: AA
Contrast with black, large text5.33:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#37EFD6
Analogous#EF37AC, #EF7A37
Triadic#50EF37, #3750EF
Split complementary#37EF7A, #37ACEF
Tetradic#ACEF37, #37EFD6, #7A37EF
Tints, shades & saturation
Channel breakdown
R239
G55
B80
Red239 (93.7%)
Green55 (21.6%)
Blue80 (31.4%)
Hue351.85°
Saturation (HSL)85.19%
Lightness57.65%
Dominant channelRed
Hex per channelR EF · G 37 · B 50
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