Colour

#1F91D9

#1F91D9
Blue
Dark
Nearest: Steel blue

#1F91D9 is a blue with RGB values 31, 145, 217 and HSL 203°, 75%, 49%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1F91D9#1F91D9

HEX#1F91D9

RGBrgb(31, 145, 217)

RGB (0–1)0.1216, 0.5686, 0.851

RGB percentages12.2%, 56.9%, 85.1%

HSLhsl(203.2, 75%, 48.6%)

HSV / HSBhsv(203.2, 85.7%, 85.1%)

CMYK85.7%, 33.2%, 0%, 14.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,068,953

CSS custom property--colour: #1F91D9;

Brightness & contrast

Relative luminance0.25552WCAG 2.x, 0 is black and 1 is white

Perceived brightness134.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.11:1

Contrast with white3.44:1WCAG normal text: Fail

Contrast with black6.11:1WCAG normal text: AA

Greyscale equivalent#7E7E7E

Inverted#E06E26

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F93DCno red cones; affects about 1% of men; ΔE 13.4 from the original

Deuteranopia#5583D8no green cones; the most common form, about 1% of men; ΔE 15.5 from the original

Tritanopia#00A3ABno blue cones; rare, and affects men and women equally; ΔE 41.3 from the original

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

Contrast with white, large text3.44:1WCAG large text: AA

Contrast with black, large text6.11:1WCAG large text: AAA

Named colours

Steel blue · ΔE 14 Cornflower blue · ΔE 15.3 Deep skyblue · ΔE 19.9 Dodgerblue · ΔE 23.5 Light skyblue · ΔE 28.4 Sky blue · ΔE 33.7

Nearest named CSS colourSteel blue (#4682B4)ΔE 13.97, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#D9671F

Analogous#1FD9C4, #1F34D9

Triadic#D91F91, #91D91F

Split complementary#D91F34, #D9C41F

Tetradic#C41FD9, #D9671F, #34D91F

Tints, shades & saturation

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

Lighter +40%#CCE7F8

Lighter +30%#A0D2F1

Lighter +20%#73BDEB

Lighter +10%#46A7E5

Darker −10%#1973AC

Darker −20%#125580

Darker −30%#0C3853

Darker −40%#051A26

More saturated +25%#0098F8

Less saturated −25%#3E8ABA

Channel breakdown

R31

G145

B217

Red31 (12.2%)

Green145 (56.9%)

Blue217 (85.1%)

Hue203.23°

Saturation (HSL)75%

Lightness48.63%

Dominant channelBlue

Hex per channelR 1F · G 91 · B D9

Keep nerding

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#1F91D9

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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