Colour

#15233C

#15233C
Blue
Dark
Nearest: Black

#15233C is a blue with RGB values 21, 35, 60 and HSL 218°, 48%, 16%. It is a dark colour, so white text on it reaches 15.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#15233C#15233C

HEX#15233C

RGBrgb(21, 35, 60)

RGB (0–1)0.0824, 0.1373, 0.2353

RGB percentages8.2%, 13.7%, 23.5%

HSLhsl(218.5, 48.1%, 15.9%)

HSV / HSBhsv(218.5, 65%, 23.5%)

CMYK65%, 41.7%, 0%, 76.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,385,276

CSS custom property--colour: #15233C;

Brightness & contrast

Relative luminance0.01688WCAG 2.x, 0 is black and 1 is white

Perceived brightness35.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.7:1

Contrast with white15.7:1WCAG normal text: AAA

Contrast with black1.34:1WCAG normal text: Fail

Greyscale equivalent#222222

Inverted#EADCC3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#19253Dno red cones; affects about 1% of men; ΔE 1.4 from the original

Deuteranopia#14213Bno green cones; the most common form, about 1% of men; ΔE 1.3 from the original

Tritanopia#00292Cno blue cones; rare, and affects men and women equally; ΔE 19.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.7:1WCAG large text: AAA

Contrast with black, large text1.34:1WCAG large text: Fail

Named colours

Black · ΔE 22.8 Dark slate grey · ΔE 27 Dim grey · ΔE 35.6 Dark slateblue · ΔE 37.4 Slate grey · ΔE 40.1 Steel blue · ΔE 41.9

Nearest named CSS colourBlack (#000000)ΔE 22.79, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3C2E15

Analogous#15373C, #1A153C

Triadic#3C1523, #233C15

Split complementary#3C1A15, #373C15

Tetradic#3C1537, #3C2E15, #153C1A

Tints, shades & saturation

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

Lighter +40%#587FC5

Lighter +30%#3D65AD

Lighter +20%#2F4F88

Lighter +10%#223962

Darker −10%#080D16

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0B2046

Less saturated −25%#1F2632

Channel breakdown

R21

G35

B60

Red21 (8.2%)

Green35 (13.7%)

Blue60 (23.5%)

Hue218.46°

Saturation (HSL)48.15%

Lightness15.88%

Dominant channelBlue

Hex per channelR 15 · G 23 · B 3C

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#15233C

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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