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Recognised as Colour

#577D96

  • #577D96
  • Blue
  • Dark
  • Nearest: Slate grey

#577D96 is a blue with RGB values 87, 125, 150 and HSL 204°, 27%, 46%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#577D96#577D96
HEX#577D96
RGBrgb(87, 125, 150)
RGB (0–1)0.3412, 0.4902, 0.5882
RGB percentages34.1%, 49%, 58.8%
HSLhsl(203.8, 26.6%, 46.5%)
HSV / HSBhsv(203.8, 42%, 58.8%)
CMYK42%, 16.7%, 0%, 41.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,733,782
CSS custom property--colour: #577D96;

Brightness & contrast

Relative luminance0.18895WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.78:1
Contrast with white4.39:1WCAG normal text: Fail
Contrast with black4.78:1WCAG normal text: AA
Greyscale equivalent#777777
Inverted#A88269

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#727C97no red cones; affects about 1% of men; ΔE 9.4 from the original
Deuteranopia#697596no green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#3F8385no blue cones; rare, and affects men and women equally; ΔE 17.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.39:1WCAG large text: AA
Contrast with black, large text4.78:1WCAG large text: AAA

Named colours

Slate grey · ΔE 8.6Light slate grey · ΔE 9.5Steel blue · ΔE 14.8Gray · ΔE 19.1Cadetblue · ΔE 19.8Dim grey · ΔE 19.8
Nearest named CSS colourSlate grey (#708090)ΔE 8.63, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#967057
Analogous#579690, #575D96
Triadic#96577D, #7D9657
Split complementary#96575D, #969057
Tetradic#905796, #967057, #5D9657

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D3DEE6
Lighter +30%#B3C6D3
Lighter +20%#93AEC0
Lighter +10%#7296AE
Darker −10%#446276
Darker −20%#324755
Darker −30%#1F2C35
Darker −40%#0C1115
More saturated +25%#3983B4
Less saturated −25%#757778

Channel breakdown

R87
G125
B150
Red87 (34.1%)
Green125 (49%)
Blue150 (58.8%)
Hue203.81°
Saturation (HSL)26.58%
Lightness46.47%
Dominant channelBlue
Hex per channelR 57 · G 7D · B 96

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Every value on this page was computed from “577d96” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.