Colour

#2387CB

#2387CB
Blue
Dark
Nearest: Steel blue

#2387CB is a blue with RGB values 35, 135, 203 and HSL 204°, 71%, 47%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#2387CB#2387CB

HEX#2387CB

RGBrgb(35, 135, 203)

RGB (0–1)0.1373, 0.5294, 0.7961

RGB percentages13.7%, 52.9%, 79.6%

HSLhsl(204.3, 70.6%, 46.7%)

HSV / HSBhsv(204.3, 82.8%, 79.6%)

CMYK82.8%, 33.5%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,328,523

CSS custom property--colour: #2387CB;

Brightness & contrast

Relative luminance0.21997WCAG 2.x, 0 is black and 1 is white

Perceived brightness125.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.4:1

Contrast with white3.89:1WCAG normal text: Fail

Contrast with black5.4:1WCAG normal text: AA

Greyscale equivalent#777777

Inverted#DC7834

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6789CEno red cones; affects about 1% of men; ΔE 12.1 from the original

Deuteranopia#4F7ACAno green cones; the most common form, about 1% of men; ΔE 14.2 from the original

Tritanopia#00989Fno blue cones; rare, and affects men and women equally; ΔE 40 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.89:1WCAG large text: AA

Contrast with black, large text5.4:1WCAG large text: AAA

Named colours

Steel blue · ΔE 10.9 Cornflower blue · ΔE 16.6 Deep skyblue · ΔE 23.2 Dodgerblue · ΔE 25.2 Light skyblue · ΔE 30.3 Light slate grey · ΔE 31.9

Nearest named CSS colourSteel blue (#4682B4)ΔE 10.87, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#CB6723

Analogous#23CBBB, #2333CB

Triadic#CB2387, #87CB23

Split complementary#CB2333, #CBBB23

Tetradic#BB23CB, #CB6723, #33CB23

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#C5E2F5

Lighter +30%#9ACCED

Lighter +20%#6EB5E6

Lighter +10%#439FDE

Darker −10%#1C6A9F

Darker −20%#144D74

Darker −30%#0D3048

Darker −40%#05131D

More saturated +25%#058DE9

Less saturated −25%#4181AD

Channel breakdown

R35

G135

B203

Red35 (13.7%)

Green135 (52.9%)

Blue203 (79.6%)

Hue204.29°

Saturation (HSL)70.59%

Lightness46.67%

Dominant channelBlue

Hex per channelR 23 · G 87 · B CB

Keep nerding

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#2387CB

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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