Colour

#21669A

#21669A
Blue
Dark
Nearest: Steel blue

#21669A is a blue with RGB values 33, 102, 154 and HSL 206°, 65%, 37%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#21669A#21669A

HEX#21669A

RGBrgb(33, 102, 154)

RGB (0–1)0.1294, 0.4, 0.6039

RGB percentages12.9%, 40%, 60.4%

HSLhsl(205.8, 64.7%, 36.7%)

HSV / HSBhsv(205.8, 78.6%, 60.4%)

CMYK78.6%, 33.8%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,188,954

CSS custom property--colour: #21669A;

Brightness & contrast

Relative luminance0.12159WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.12:1

Contrast with white6.12:1WCAG normal text: AA

Contrast with black3.43:1WCAG normal text: Fail

Greyscale equivalent#5B5B5B

Inverted#DE9965

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4E689Cno red cones; affects about 1% of men; ΔE 9 from the original

Deuteranopia#3D5D99no green cones; the most common form, about 1% of men; ΔE 10.3 from the original

Tritanopia#007379no blue cones; rare, and affects men and women equally; ΔE 32.2 from the original

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

Contrast with white, large text6.12:1WCAG large text: AAA

Contrast with black, large text3.43:1WCAG large text: AA

Named colours

Steel blue · ΔE 11.3 Slate grey · ΔE 26.3 Light slate grey · ΔE 27.4 Cornflower blue · ΔE 28 Dark slateblue · ΔE 31.4 Dark slate grey · ΔE 33.6

Nearest named CSS colourSteel blue (#4682B4)ΔE 11.32, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#9A5521

Analogous#219A91, #212A9A

Triadic#9A2166, #669A21

Split complementary#9A212A, #9A9121

Tetradic#91219A, #9A5521, #2A9A21

Tints, shades & saturation

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

Lighter +40%#9DC9EA

Lighter +30%#73B2E1

Lighter +20%#499BD8

Lighter +10%#2A82C4

Darker −10%#184A70

Darker −20%#0F2E46

Darker −30%#06131C

Darker −40%#000000

More saturated +25%#0A69B1

Less saturated −25%#386383

Channel breakdown

R33

G102

B154

Red33 (12.9%)

Green102 (40%)

Blue154 (60.4%)

Hue205.79°

Saturation (HSL)64.71%

Lightness36.67%

Dominant channelBlue

Hex per channelR 21 · G 66 · B 9A

Keep nerding

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

#21669A

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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