Recognised as Colour
#EF3A40
- #EF3A40
- Red
- Dark
- Nearest: Crimson
#EF3A40 is a red with RGB values 239, 58, 64 and HSL 358°, 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
#EF3A40#EF3A40
HEX#EF3A40
RGBrgb(239, 58, 64)
RGB (0–1)0.9373, 0.2275, 0.251
RGB percentages93.7%, 22.7%, 25.1%
HSLhsl(358, 85%, 58.2%)
HSV / HSBhsv(358, 75.7%, 93.7%)
CMYK0%, 75.7%, 73.2%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,678,016
CSS custom property--colour: #EF3A40;
Brightness & contrast
Relative luminance0.21747WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.35:1
Contrast with white3.93:1WCAG normal text: Fail
Contrast with black5.35:1WCAG normal text: AA
Greyscale equivalent#616161
Inverted#10C5BF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.93:1WCAG large text: AA
Contrast with black, large text5.35:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#3AEFE9
Analogous#EF3A9A, #EF8F3A
Triadic#40EF3A, #3A40EF
Split complementary#3AEF8F, #3A9AEF
Tetradic#9BEF3A, #3AEFE9, #8F3AEF
Tints, shades & saturation
Channel breakdown
R239
G58
B64
Red239 (93.7%)
Green58 (22.7%)
Blue64 (25.1%)
Hue358.01°
Saturation (HSL)84.98%
Lightness58.24%
Dominant channelRed
Hex per channelR EF · G 3A · B 40
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