Recognised as Colour
#FF0166
- #FF0166
- Red
- Dark
- Nearest: Crimson
#FF0166 is a red with RGB values 255, 1, 102 and HSL 336°, 100%, 50%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Crimson.
Colour values
#FF0166#FF0166
HEX#FF0166
RGBrgb(255, 1, 102)
RGB (0–1)1, 0.0039, 0.4
RGB percentages100%, 0.4%, 40%
HSLhsl(336.1, 100%, 50.2%)
HSV / HSBhsv(336.1, 99.6%, 100%)
CMYK0%, 99.6%, 60%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,712,038
CSS custom property--colour: #FF0166;
Brightness & contrast
Relative luminance0.22241WCAG 2.x, 0 is black and 1 is white
Perceived brightness143.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.45:1
Contrast with white3.85:1WCAG normal text: Fail
Contrast with black5.45:1WCAG normal text: AA
Greyscale equivalent#3E3E3E
Inverted#00FE99
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.85:1WCAG large text: AA
Contrast with black, large text5.45:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#01FF9A
Analogous#FF01E5, #FF1B01
Triadic#66FF01, #0166FF
Split complementary#01FF1B, #01E5FF
Tetradic#E5FF01, #01FF9A, #1B01FF
Tints, shades & saturation
Channel breakdown
R255
G1
B102
Red255 (100%)
Green1 (0.4%)
Blue102 (40%)
Hue336.14°
Saturation (HSL)100%
Lightness50.2%
Dominant channelRed
Hex per channelR FF · G 01 · B 66
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