Colour

#21252F

#21252F
Blue
Dark
Nearest: Black

#21252F is a blue with RGB values 33, 37, 47 and HSL 223°, 18%, 16%. It is a dark colour, so white text on it reaches 15.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#21252F#21252F

HEX#21252F

RGBrgb(33, 37, 47)

RGB (0–1)0.1294, 0.1451, 0.1843

RGB percentages12.9%, 14.5%, 18.4%

HSLhsl(222.9, 17.5%, 15.7%)

HSV / HSBhsv(222.9, 29.8%, 18.4%)

CMYK29.8%, 21.3%, 0%, 81.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,172,207

CSS custom property--colour: #21252F;

Brightness & contrast

Relative luminance0.01852WCAG 2.x, 0 is black and 1 is white

Perceived brightness37.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.32:1

Contrast with white15.32:1WCAG normal text: AAA

Contrast with black1.37:1WCAG normal text: Fail

Greyscale equivalent#252525

Inverted#DEDAD0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#22262Fno red cones; affects about 1% of men; ΔE 0.9 from the original

Deuteranopia#21242Fno green cones; the most common form, about 1% of men; ΔE 1 from the original

Tritanopia#1D2728no blue cones; rare, and affects men and women equally; ΔE 7.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.32:1WCAG large text: AAA

Contrast with black, large text1.37:1WCAG large text: Fail

Named colours

Black · ΔE 16.4 Dark slate grey · ΔE 21.2 Dim grey · ΔE 30.6 Slate grey · ΔE 38.4 Gray · ΔE 39.6 Light slate grey · ΔE 41.5

Nearest named CSS colourBlack (#000000)ΔE 16.38, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2F2B21

Analogous#212C2F, #24212F

Triadic#2F2125, #252F21

Split complementary#2F2421, #2C2F21

Tetradic#2F212C, #2F2B21, #212F24

Tints, shades & saturation

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

Lighter +40%#7A86A2

Lighter +30%#606C89

Lighter +20%#4B546B

Lighter +10%#363D4D

Darker −10%#0C0D11

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#172139

Less saturated −25%#282828

Channel breakdown

R33

G37

B47

Red33 (12.9%)

Green37 (14.5%)

Blue47 (18.4%)

Hue222.86°

Saturation (HSL)17.5%

Lightness15.69%

Dominant channelBlue

Hex per channelR 21 · G 25 · B 2F

Keep nerding

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

#21252F

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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