Colour

#15213D

#15213D
Blue
Dark
Nearest: Black

#15213D is a blue with RGB values 21, 33, 61 and HSL 222°, 49%, 16%. It is a dark colour, so white text on it reaches 15.9:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#15213D#15213D

HEX#15213D

RGBrgb(21, 33, 61)

RGB (0–1)0.0824, 0.1294, 0.2392

RGB percentages8.2%, 12.9%, 23.9%

HSLhsl(222, 48.8%, 16.1%)

HSV / HSBhsv(222, 65.6%, 23.9%)

CMYK65.6%, 45.9%, 0%, 76.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,384,765

CSS custom property--colour: #15213D;

Brightness & contrast

Relative luminance0.01584WCAG 2.x, 0 is black and 1 is white

Perceived brightness34.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.95:1

Contrast with white15.95:1WCAG normal text: AAA

Contrast with black1.32:1WCAG normal text: Fail

Greyscale equivalent#202020

Inverted#EADEC2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#15243Eno red cones; affects about 1% of men; ΔE 2.4 from the original

Deuteranopia#10203Cno green cones; the most common form, about 1% of men; ΔE 1.2 from the original

Tritanopia#00272Cno blue cones; rare, and affects men and women equally; ΔE 20.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.95:1WCAG large text: AAA

Contrast with black, large text1.32:1WCAG large text: Fail

Named colours

Black · ΔE 24.1 Dark slate grey · ΔE 29.4 Dark slateblue · ΔE 35.5 Dim grey · ΔE 37.3 Midnight blue · ΔE 40.2 Slate grey · ΔE 41.3

Nearest named CSS colourBlack (#000000)ΔE 24.12, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3D3115

Analogous#15353D, #1D153D

Triadic#3D1521, #213D15

Split complementary#3D1D15, #353D15

Tetradic#3D1535, #3D3115, #153D1D

Tints, shades & saturation

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

Lighter +40%#5879C6

Lighter +30%#3C5FAF

Lighter +20%#2F4A89

Lighter +10%#223663

Darker −10%#080C17

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0B1D47

Less saturated −25%#1F2533

Channel breakdown

R21

G33

B61

Red21 (8.2%)

Green33 (12.9%)

Blue61 (23.9%)

Hue222°

Saturation (HSL)48.78%

Lightness16.08%

Dominant channelBlue

Hex per channelR 15 · G 21 · B 3D

Keep nerding

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

#15213D

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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