Colour

#175AA0

#175AA0
Blue
Dark
Nearest: Dark slateblue

#175AA0 is a blue with RGB values 23, 90, 160 and HSL 211°, 75%, 36%. It is a dark colour, so white text on it reaches 7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#175AA0#175AA0

HEX#175AA0

RGBrgb(23, 90, 160)

RGB (0–1)0.0902, 0.3529, 0.6275

RGB percentages9%, 35.3%, 62.7%

HSLhsl(210.7, 74.9%, 35.9%)

HSV / HSBhsv(210.7, 85.6%, 62.7%)

CMYK85.6%, 43.7%, 0%, 37.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,530,528

CSS custom property--colour: #175AA0;

Brightness & contrast

Relative luminance0.10033WCAG 2.x, 0 is black and 1 is white

Perceived brightness88.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.98:1

Contrast with white6.98:1WCAG normal text: AA

Contrast with black3.01:1WCAG normal text: Fail

Greyscale equivalent#515151

Inverted#E8A55F

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#3660A3no red cones; affects about 1% of men; ΔE 4.5 from the original

Deuteranopia#1B549Fno green cones; the most common form, about 1% of men; ΔE 4.8 from the original

Tritanopia#006B75no blue cones; rare, and affects men and women equally; ΔE 41.9 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text6.98:1WCAG large text: AAA

Contrast with black, large text3.01:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 20.9 Steel blue · ΔE 21.3 Cornflower blue · ΔE 24.9 Dodgerblue · ΔE 29.4 Royal blue · ΔE 31 Slate blue · ΔE 33.6

Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.88, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#A05D17

Analogous#179EA0, #1917A0

Triadic#A0175A, #5AA017

Split complementary#A01917, #9EA017

Tetradic#A0179E, #A05D17, #17A019

Tints, shades & saturation

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

Lighter +40%#93C0F0

Lighter +30%#67A7E9

Lighter +20%#3A8DE3

Lighter +10%#1D73CD

Darker −10%#114173

Darker −20%#0A2847

Darker −30%#040F1A

Darker −40%#000000

More saturated +25%#0059B7

Less saturated −25%#2E5B89

Channel breakdown

R23

G90

B160

Red23 (9%)

Green90 (35.3%)

Blue160 (62.7%)

Hue210.66°

Saturation (HSL)74.86%

Lightness35.88%

Dominant channelBlue

Hex per channelR 17 · G 5A · B A0

Keep nerding

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

#175AA0

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

Nerdulate something else