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Recognised as Colour

#2639CB

  • #2639CB
  • Blue
  • Dark
  • Nearest: Dark blue

#2639CB is a blue with RGB values 38, 57, 203 and HSL 233°, 68%, 47%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#2639CB#2639CB
HEX#2639CB
RGBrgb(38, 57, 203)
RGB (0–1)0.149, 0.2235, 0.7961
RGB percentages14.9%, 22.4%, 79.6%
HSLhsl(233.1, 68.5%, 47.3%)
HSV / HSBhsv(233.1, 81.3%, 79.6%)
CMYK81.3%, 71.9%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,505,163
CSS custom property--colour: #2639CB;

Brightness & contrast

Relative luminance0.0765WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.3:1
Contrast with white8.3:1WCAG normal text: AAA
Contrast with black2.53:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#D9C634

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0056CFno red cones; affects about 1% of men; ΔE 21.5 from the original
Deuteranopia#0046C8no green cones; the most common form, about 1% of men; ΔE 12 from the original
Tritanopia#00637Eno blue cones; rare, and affects men and women equally; ΔE 81.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.3:1WCAG large text: AAA
Contrast with black, large text2.53:1WCAG large text: Fail

Named colours

Dark blue · ΔE 20.7Medium slateblue · ΔE 22.4Navy · ΔE 23.6Slate blue · ΔE 24.3Blue violet · ΔE 25.9Royal blue · ΔE 26.7
Nearest named CSS colourDark blue (#00008B)ΔE 20.66, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CBB826
Analogous#268BCB, #6626CB
Triadic#CB2639, #39CB26
Split complementary#CB6626, #8BCB26
Tetradic#CB268B, #CBB826, #26CB66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8CDF5
Lighter +30%#9DA6ED
Lighter +20%#727FE5
Lighter +10%#4759DD
Darker −10%#1E2DA0
Darker −20%#162175
Darker −30%#0E154A
Darker −40%#06091F
More saturated +25%#0822E9
Less saturated −25%#4450AD

Channel breakdown

R38
G57
B203
Red38 (14.9%)
Green57 (22.4%)
Blue203 (79.6%)
Hue233.09°
Saturation (HSL)68.46%
Lightness47.25%
Dominant channelBlue
Hex per channelR 26 · G 39 · B CB

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Every value on this page was computed from “2639cb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.