Nerdulator> put something in

Recognised as Colour

#577B87

  • #577B87
  • Cyan
  • Dark
  • Nearest: Slate grey

#577B87 is a cyan with RGB values 87, 123, 135 and HSL 195°, 22%, 44%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#577B87#577B87
HEX#577B87
RGBrgb(87, 123, 135)
RGB (0–1)0.3412, 0.4824, 0.5294
RGB percentages34.1%, 48.2%, 52.9%
HSLhsl(195, 21.6%, 43.5%)
HSV / HSBhsv(195, 35.6%, 52.9%)
CMYK35.6%, 8.9%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,733,255
CSS custom property--colour: #577B87;

Brightness & contrast

Relative luminance0.17941WCAG 2.x, 0 is black and 1 is white
Perceived brightness115 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.59:1
Contrast with white4.58:1WCAG normal text: AA
Contrast with black4.59:1WCAG normal text: AA
Greyscale equivalent#747474
Inverted#A88478

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#747988no red cones; affects about 1% of men; ΔE 11.1 from the original
Deuteranopia#6C7387no green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#467F7Fno blue cones; rare, and affects men and women equally; ΔE 10.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.58:1WCAG large text: AAA
Contrast with black, large text4.59:1WCAG large text: AAA

Named colours

Slate grey · ΔE 8.1Light slate grey · ΔE 9.8Gray · ΔE 14.8Dim grey · ΔE 15.1Cadetblue · ΔE 15.8Teal · ΔE 19.5
Nearest named CSS colourSlate grey (#708090)ΔE 8.11, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#876357
Analogous#57877B, #576387
Triadic#87577B, #7B8757
Split complementary#875763, #877B57
Tetradic#7B5787, #876357, #638757

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCDADE
Lighter +30%#ADC3CA
Lighter +20%#8EACB6
Lighter +10%#6F95A2
Darker −10%#435F68
Darker −20%#2F4249
Darker −30%#1B262A
Darker −40%#070A0B
More saturated +25%#3B89A3
Less saturated −25%#6F6F6F

Channel breakdown

R87
G123
B135
Red87 (34.1%)
Green123 (48.2%)
Blue135 (52.9%)
Hue195°
Saturation (HSL)21.62%
Lightness43.53%
Dominant channelBlue
Hex per channelR 57 · G 7B · B 87

Keep nerding

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

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “577b87” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.