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Recognised as Colour

#285B63

  • #285B63
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#285B63 is a cyan with RGB values 40, 91, 99 and HSL 188°, 42%, 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

#285B63#285B63
HEX#285B63
RGBrgb(40, 91, 99)
RGB (0–1)0.1569, 0.3569, 0.3882
RGB percentages15.7%, 35.7%, 38.8%
HSLhsl(188.1, 42.4%, 27.3%)
HSV / HSBhsv(188.1, 59.6%, 38.8%)
CMYK59.6%, 8.1%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,644,835
CSS custom property--colour: #285B63;

Brightness & contrast

Relative luminance0.08834WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.59:1
Contrast with white7.59:1WCAG normal text: AAA
Contrast with black2.77:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#D7A49C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#545864no red cones; affects about 1% of men; ΔE 15.9 from the original
Deuteranopia#4A5163no green cones; the most common form, about 1% of men; ΔE 16.2 from the original
Tritanopia#005F5Dno blue cones; rare, and affects men and women equally; ΔE 10.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.59:1WCAG large text: AAA
Contrast with black, large text2.77:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 8Teal · ΔE 19.2Dim grey · ΔE 19.5Slate grey · ΔE 21.1Dark cyan · ΔE 23.2Light slate grey · ΔE 23.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 7.96, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#633028
Analogous#28634D, #283E63
Triadic#63285B, #5B6328
Split complementary#63283E, #634E28
Tetradic#4D2863, #633028, #3E6328

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#88C5CF
Lighter +30%#64B4C0
Lighter +20%#459EAC
Lighter +10%#377C87
Darker −10%#193A3F
Darker −20%#0B181A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#176874
Less saturated −25%#394E52

Channel breakdown

R40
G91
B99
Red40 (15.7%)
Green91 (35.7%)
Blue99 (38.8%)
Hue188.14°
Saturation (HSL)42.45%
Lightness27.25%
Dominant channelBlue
Hex per channelR 28 · G 5B · B 63

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Every value on this page was computed from “285b63” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.