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Recognised as Colour

#305C63

  • #305C63
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#305C63 is a cyan with RGB values 48, 92, 99 and HSL 188°, 35%, 29%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#305C63#305C63
HEX#305C63
RGBrgb(48, 92, 99)
RGB (0–1)0.1882, 0.3608, 0.3882
RGB percentages18.8%, 36.1%, 38.8%
HSLhsl(188.2, 34.7%, 28.8%)
HSV / HSBhsv(188.2, 51.5%, 38.8%)
CMYK51.5%, 7.1%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,169,379
CSS custom property--colour: #305C63;

Brightness & contrast

Relative luminance0.09184WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.4:1
Contrast with white7.4:1WCAG normal text: AAA
Contrast with black2.84:1WCAG normal text: Fail
Greyscale equivalent#535353
Inverted#CFA39C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#555963no red cones; affects about 1% of men; ΔE 14.1 from the original
Deuteranopia#4D5363no green cones; the most common form, about 1% of men; ΔE 14.7 from the original
Tritanopia#13605Eno blue cones; rare, and affects men and women equally; ΔE 10 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.4:1WCAG large text: AAA
Contrast with black, large text2.84:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 7.3Dim grey · ΔE 17.7Teal · ΔE 19.8Slate grey · ΔE 19.9Light slate grey · ΔE 22.5Gray · ΔE 23.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 7.26, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#633730
Analogous#306351, #304263
Triadic#63305C, #5C6330
Split complementary#633042, #635130
Tetradic#513063, #633730, #426330

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#94C4CB
Lighter +30%#72B0BA
Lighter +20%#519CA8
Lighter +10%#417C85
Darker −10%#1F3C41
Darker −20%#0F1C1E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1E6975
Less saturated −25%#424F51

Channel breakdown

R48
G92
B99
Red48 (18.8%)
Green92 (36.1%)
Blue99 (38.8%)
Hue188.24°
Saturation (HSL)34.69%
Lightness28.82%
Dominant channelBlue
Hex per channelR 30 · G 5C · B 63

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Every value on this page was computed from “305c63” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.