Colour
#1C1717
- #1C1717
- Red
- Dark
- Nearest: Black
#1C1717 is a red with RGB values 28, 23, 23 and HSL 0°, 10%, 10%. It is a dark colour, so white text on it reaches 17.7:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#1C1717#1C1717
HEX#1C1717
RGBrgb(28, 23, 23)
RGB (0–1)0.1098, 0.0902, 0.0902
RGB percentages11%, 9%, 9%
HSLhsl(0, 9.8%, 10%)
HSV / HSBhsv(0, 17.9%, 11%)
CMYK0%, 17.9%, 17.9%, 89%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,840,919
CSS custom property--colour: #1C1717;
Brightness & contrast
Relative luminance0.00922WCAG 2.x, 0 is black and 1 is white
Perceived brightness24.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.73:1
Contrast with white17.73:1WCAG normal text: AAA
Contrast with black1.18:1WCAG normal text: Fail
Greyscale equivalent#181818
Inverted#E3E8E8
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.73:1WCAG large text: AAA
Contrast with black, large text1.18:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#171C1C
Analogous#1C171A, #1C1A17
Triadic#171C17, #17171C
Split complementary#171C1A, #171A1C
Tetradic#1A1C17, #171C1C, #1A171C
Tints, shades & saturation
Channel breakdown
R28
G23
B23
Red28 (11%)
Green23 (9%)
Blue23 (9%)
Hue0°
Saturation (HSL)9.8%
Lightness10%
Dominant channelRed
Hex per channelR 1C · G 17 · B 17
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