Recognised as Colour

#00557E

#00557E
Cyan
Dark
Nearest: Steel blue

#00557E is a cyan with RGB values 0, 85, 126 and HSL 200°, 100%, 25%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#00557E#00557E

HEX#00557E

RGBrgb(0, 85, 126)

RGB (0–1)0, 0.3333, 0.4941

RGB percentages0%, 33.3%, 49.4%

HSLhsl(199.5, 100%, 24.7%)

HSV / HSBhsv(199.5, 100%, 49.4%)

CMYK100%, 32.5%, 0%, 50.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer21,886

CSS custom property--colour: #00557E;

Brightness & contrast

Relative luminance0.08003WCAG 2.x, 0 is black and 1 is white

Perceived brightness77.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.07:1

Contrast with white8.07:1WCAG normal text: AAA

Contrast with black2.6:1WCAG normal text: Fail

Greyscale equivalent#464646

Inverted#FFAA81

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#415680no red cones; affects about 1% of men; ΔE 10.9 from the original

Deuteranopia#314B7Dno green cones; the most common form, about 1% of men; ΔE 12.7 from the original

Tritanopia#005F64no blue cones; rare, and affects men and women equally; ΔE 25.2 from the original

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

Contrast with white, large text8.07:1WCAG large text: AAA

Contrast with black, large text2.6:1WCAG large text: Fail

Named colours

Steel blue · ΔE 18.8 Dark slate grey · ΔE 26.3 Slate grey · ΔE 26.7 Light slate grey · ΔE 28.6 Dim grey · ΔE 31.5 Teal · ΔE 34.2

Nearest named CSS colourSteel blue (#4682B4)ΔE 18.79, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#7E2900

Analogous#007E68, #00167E

Triadic#7E0055, #557E00

Split complementary#7E0016, #7E6800

Tetradic#68007E, #7E2900, #167E00

Tints, shades & saturation

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

Lighter +40%#4BC4FF

Lighter +30%#18B4FF

Lighter +20%#009AE4

Lighter +10%#0077B1

Darker −10%#00334B

Darker −20%#001018

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00557E

Less saturated −25%#10506E

Channel breakdown

G85

B126

Red0 (0%)

Green85 (33.3%)

Blue126 (49.4%)

Hue199.52°

Saturation (HSL)100%

Lightness24.71%

Dominant channelBlue

Hex per channelR 00 · G 55 · B 7E

Keep nerding

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

#00557E

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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