Colour

#17253F

#17253F
Blue
Dark
Nearest: Black

#17253F is a blue with RGB values 23, 37, 63 and HSL 219°, 47%, 17%. 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

#17253F#17253F

HEX#17253F

RGBrgb(23, 37, 63)

RGB (0–1)0.0902, 0.1451, 0.2471

RGB percentages9%, 14.5%, 24.7%

HSLhsl(219, 46.5%, 16.9%)

HSV / HSBhsv(219, 63.5%, 24.7%)

CMYK63.5%, 41.3%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,516,863

CSS custom property--colour: #17253F;

Brightness & contrast

Relative luminance0.01864WCAG 2.x, 0 is black and 1 is white

Perceived brightness37.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.3:1

Contrast with white15.3:1WCAG normal text: AAA

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

Greyscale equivalent#242424

Inverted#E8DAC0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1A2740no red cones; affects about 1% of men; ΔE 1.3 from the original

Deuteranopia#15233Eno green cones; the most common form, about 1% of men; ΔE 1.3 from the original

Tritanopia#012B2Fno blue cones; rare, and affects men and women equally; ΔE 19.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.3:1WCAG large text: AAA

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

Named colours

Black · ΔE 23.8 Dark slate grey · ΔE 26.8 Dim grey · ΔE 35.1 Dark slateblue · ΔE 36.5 Slate grey · ΔE 39.3 Steel blue · ΔE 40.8

Nearest named CSS colourBlack (#000000)ΔE 23.83, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3F3117

Analogous#17393F, #1D173F

Triadic#3F1725, #253F17

Split complementary#3F1D17, #393F17

Tetradic#3F1739, #3F3117, #173F1D

Tints, shades & saturation

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

Lighter +40%#5E82C4

Lighter +30%#4067AF

Lighter +20%#32518A

Lighter +10%#253B64

Darker −10%#090F1A

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0C224A

Less saturated −25%#222834

Channel breakdown

R23

G37

B63

Red23 (9%)

Green37 (14.5%)

Blue63 (24.7%)

Hue219°

Saturation (HSL)46.51%

Lightness16.86%

Dominant channelBlue

Hex per channelR 17 · G 25 · B 3F

Keep nerding

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#17253F

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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