Colour

#28454A

#28454A
Cyan
Dark
Nearest: Dark slate grey

#28454A is a cyan with RGB values 40, 69, 74 and HSL 189°, 30%, 22%. It is a dark colour, so white text on it reaches 10.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#28454A#28454A

HEX#28454A

RGBrgb(40, 69, 74)

RGB (0–1)0.1569, 0.2706, 0.2902

RGB percentages15.7%, 27.1%, 29%

HSLhsl(188.8, 29.8%, 22.4%)

HSV / HSBhsv(188.8, 45.9%, 29%)

CMYK45.9%, 6.8%, 0%, 71%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,639,178

CSS custom property--colour: #28454A;

Brightness & contrast

Relative luminance0.05202WCAG 2.x, 0 is black and 1 is white

Perceived brightness62.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.29:1

Contrast with white10.29:1WCAG normal text: AAA

Contrast with black2.04:1WCAG normal text: Fail

Greyscale equivalent#3F3F3F

Inverted#D7BAB5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#40434Ano red cones; affects about 1% of men; ΔE 10 from the original

Deuteranopia#3B3F4Ano green cones; the most common form, about 1% of men; ΔE 10.5 from the original

Tritanopia#194746no blue cones; rare, and affects men and women equally; ΔE 6.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text10.29:1WCAG large text: AAA

Contrast with black, large text2.04:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 5.4 Dim grey · ΔE 20.5 Slate grey · ΔE 26.8 Gray · ΔE 28.6 Teal · ΔE 28.7 Black · ΔE 29.6

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 5.36, clearly different but related

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4A2D28

Analogous#284A3E, #28344A

Triadic#4A2845, #454A28

Split complementary#4A2834, #4A3E28

Tetradic#3E284A, #4A2D28, #344A28

Tints, shades & saturation

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

Lighter +40%#82B3BC

Lighter +30%#619FAA

Lighter +20%#4C838C

Lighter +10%#3A646B

Darker −10%#162629

Darker −20%#040708

Darker −30%#000000

Darker −40%#000000

More saturated +25%#1A4F58

Less saturated −25%#363B3C

Channel breakdown

R40

G69

B74

Red40 (15.7%)

Green69 (27.1%)

Blue74 (29%)

Hue188.82°

Saturation (HSL)29.82%

Lightness22.35%

Dominant channelBlue

Hex per channelR 28 · G 45 · B 4A

Keep nerding

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

#28454A

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