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Recognised as Colour

#03657F

  • #03657F
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#03657F is a cyan with RGB values 3, 101, 127 and HSL 193°, 95%, 25%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dark slate grey.

Colour values

#03657F#03657F
HEX#03657F
RGBrgb(3, 101, 127)
RGB (0–1)0.0118, 0.3961, 0.498
RGB percentages1.2%, 39.6%, 49.8%
HSLhsl(192.6, 95.4%, 25.5%)
HSV / HSBhsv(192.6, 97.6%, 49.8%)
CMYK97.6%, 20.5%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer222,591
CSS custom property--colour: #03657F;

Brightness & contrast

Relative luminance0.10859WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.62:1
Contrast with white6.62:1WCAG normal text: AA
Contrast with black3.17:1WCAG normal text: Fail
Greyscale equivalent#525252
Inverted#FC9A80

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#566380no red cones; affects about 1% of men; ΔE 17.8 from the original
Deuteranopia#48587Fno green cones; the most common form, about 1% of men; ΔE 19.7 from the original
Tritanopia#006D6Eno blue cones; rare, and affects men and women equally; ΔE 17.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.62:1WCAG large text: AAA
Contrast with black, large text3.17:1WCAG large text: AA

Named colours

Dark slate grey · ΔE 19.7Steel blue · ΔE 20Teal · ΔE 21.1Slate grey · ΔE 21.4Light slate grey · ΔE 23.2Dark cyan · ΔE 23.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.72, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F1D03
Analogous#037F5B, #03277F
Triadic#7F0365, #657F03
Split complementary#7F0327, #7F5B03
Tetradic#5B037F, #7F1D03, #277F03

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#53D8FB
Lighter +30%#21CCFA
Lighter +20%#05B4E3
Lighter +10%#048DB1
Darker −10%#023D4D
Darker −20%#01161B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#006782
Less saturated −25%#135C6F

Channel breakdown

R3
G101
B127
Red3 (1.2%)
Green101 (39.6%)
Blue127 (49.8%)
Hue192.58°
Saturation (HSL)95.38%
Lightness25.49%
Dominant channelBlue
Hex per channelR 03 · G 65 · B 7F

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Every value on this page was computed from “03657f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.