Colour

#21273F

#21273F
Blue
Dark
Nearest: Black

#21273F is a blue with RGB values 33, 39, 63 and HSL 228°, 31%, 19%. It is a dark colour, so white text on it reaches 14.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#21273F#21273F

HEX#21273F

RGBrgb(33, 39, 63)

RGB (0–1)0.1294, 0.1529, 0.2471

RGB percentages12.9%, 15.3%, 24.7%

HSLhsl(228, 31.3%, 18.8%)

HSV / HSBhsv(228, 47.6%, 24.7%)

CMYK47.6%, 38.1%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,172,735

CSS custom property--colour: #21273F;

Brightness & contrast

Relative luminance0.02133WCAG 2.x, 0 is black and 1 is white

Perceived brightness40.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.72:1

Contrast with white14.72:1WCAG normal text: AAA

Contrast with black1.43:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#DED8C0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1F2940no red cones; affects about 1% of men; ΔE 1.8 from the original

Deuteranopia#1C273Eno green cones; the most common form, about 1% of men; ΔE 2 from the original

Tritanopia#172C30no blue cones; rare, and affects men and women equally; ΔE 16.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text14.72:1WCAG large text: AAA

Contrast with black, large text1.43:1WCAG large text: Fail

Named colours

Black · ΔE 23.4 Dark slate grey · ΔE 25.6 Dim grey · ΔE 32.9 Dark slateblue · ΔE 36.6 Slate grey · ΔE 37.7 Steel blue · ΔE 40.7

Nearest named CSS colourBlack (#000000)ΔE 23.36, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3F3921

Analogous#21363F, #2A213F

Triadic#3F2127, #273F21

Split complementary#3F2A21, #363F21

Tetradic#3F2136, #3F3921, #213F2A

Tints, shades & saturation

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

Lighter +40%#7582B7

Lighter +30%#5665A3

Lighter +20%#445082

Lighter +10%#333C60

Darker −10%#0F121E

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#15204B

Less saturated −25%#2D2E33

Channel breakdown

R33

G39

B63

Red33 (12.9%)

Green39 (15.3%)

Blue63 (24.7%)

Hue228°

Saturation (HSL)31.25%

Lightness18.82%

Dominant channelBlue

Hex per channelR 21 · G 27 · B 3F

Keep nerding

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

#21273F

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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