Recognised as Colour

#00577C

#00577C
Cyan
Dark
Nearest: Steel blue

#00577C is a cyan with RGB values 0, 87, 124 and HSL 198°, 100%, 24%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#00577C#00577C

HEX#00577C

RGBrgb(0, 87, 124)

RGB (0–1)0, 0.3412, 0.4863

RGB percentages0%, 34.1%, 48.6%

HSLhsl(197.9, 100%, 24.3%)

HSV / HSBhsv(197.9, 100%, 48.6%)

CMYK100%, 29.8%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer22,396

CSS custom property--colour: #00577C;

Brightness & contrast

Relative luminance0.08272WCAG 2.x, 0 is black and 1 is white

Perceived brightness78.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.91:1

Contrast with white7.91:1WCAG normal text: AAA

Contrast with black2.65:1WCAG normal text: Fail

Greyscale equivalent#474747

Inverted#FFA883

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#45577Eno red cones; affects about 1% of men; ΔE 12.7 from the original

Deuteranopia#354D7Bno green cones; the most common form, about 1% of men; ΔE 13.6 from the original

Tritanopia#006164no blue cones; rare, and affects men and women equally; ΔE 23.8 from the original

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

Contrast with white, large text7.91:1WCAG large text: AAA

Contrast with black, large text2.65:1WCAG large text: Fail

Named colours

Steel blue · ΔE 19 Dark slate grey · ΔE 23.9 Slate grey · ΔE 25.3 Light slate grey · ΔE 27.3 Dim grey · ΔE 29.9 Teal · ΔE 31.3

Nearest named CSS colourSteel blue (#4682B4)ΔE 19.01, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#7C2500

Analogous#007C63, #00197C

Triadic#7C0057, #577C00

Split complementary#7C0019, #7C6300

Tetradic#63007C, #7C2500, #197C00

Tints, shades & saturation

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

Lighter +40%#49C9FF

Lighter +30%#16B9FF

Lighter +20%#009FE2

Lighter +10%#007BAF

Darker −10%#003349

Darker −20%#000F16

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00577C

Less saturated −25%#10516D

Channel breakdown

G87

B124

Red0 (0%)

Green87 (34.1%)

Blue124 (48.6%)

Hue197.9°

Saturation (HSL)100%

Lightness24.31%

Dominant channelBlue

Hex per channelR 00 · G 57 · B 7C

Keep nerding

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

#00577C

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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