Colour
#305B58
- #305B58
- Cyan
- Dark
- Nearest: Dark slate grey
#305B58 is a cyan with RGB values 48, 91, 88 and HSL 176°, 31%, 27%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#305B58#305B58
HEX#305B58
RGBrgb(48, 91, 88)
RGB (0–1)0.1882, 0.3569, 0.3451
RGB percentages18.8%, 35.7%, 34.5%
HSLhsl(175.8, 30.9%, 27.3%)
HSV / HSBhsv(175.8, 47.3%, 35.7%)
CMYK47.3%, 0%, 3.3%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,169,112
CSS custom property--colour: #305B58;
Brightness & contrast
Relative luminance0.08815WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.6:1
Contrast with white7.6:1WCAG normal text: AAA
Contrast with black2.76:1WCAG normal text: Fail
Greyscale equivalent#525252
Inverted#CFA4A7
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.6:1WCAG large text: AAA
Contrast with black, large text2.76:1WCAG large text: Fail
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#5B3033
Analogous#305B43, #30485B
Triadic#58305B, #5B5830
Split complementary#5B3048, #5B4230
Tetradic#43305B, #5B3033, #495B30
Tints, shades & saturation
Channel breakdown
R48
G91
B88
Red48 (18.8%)
Green91 (35.7%)
Blue88 (34.5%)
Hue175.81°
Saturation (HSL)30.94%
Lightness27.25%
Dominant channelGreen
Hex per channelR 30 · G 5B · B 58
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