#57B9CF#57B9CF

#57B9CF is a light, moderate cyan. Relative luminance 0.412; OKLCH L 73.5% C 0.097 H 214.6°. Best body text is #000000 at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#57B9CF
RGB	rgb(87, 185, 207)
HSL	hsl(191, 56%, 58%)
HSV	hsv(191, 58%, 81%)
CMYK	cmyk(58%, 10.6%, 0%, 18.8%)
CIE-LAB	lab(70.33, -22.36, -19.78)
CIE-LCH	lch(70.33, 29.85, 221.49°)
OKLab	oklab(73.55% -0.0795 -0.0548)
OKLCH	oklch(73.55% 0.097 214.6)
XYZ	xyz(32.5374, 41.2260, 65.2621)
Luminance	0.4123 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57B9CF #CF6D57

analogous

#57CFA9 #57B9CF #577DCF

triadic

#57B9CF #CF57B9 #B9CF57

tetradic

#57B9CF #A957CF #CF6D57 #7DCF57

square

#57B9CF #A957CF #CF6D57 #7DCF57

split-complementary

#57B9CF #CF577D #CFA957

monochromatic

#267485 #349DB5 #57B9CF #87CDDD #B6E1EA

Accessibility & contrast

On white

2.27

#57B9CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.25

#57B9CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57B9CF

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57B9CF	#FFFFFF	#000000	##000000
##57B9CF	1.00	2.27	9.25	9.25
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.25	21.00	1.00	1.00
##000000	9.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B4D0

Deuteranopia (green-blind)

#97A6CF

Tritanopia (blue-blind)

#00C1C0

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #57b9cf;
/* rgb */ color: rgb(87, 185, 207);
/* oklch */ color: oklch(73.5% 0.097 214.6);

Tailwind

colors: {
  custom: {
    50: '#91cedd',
    500: '#57b9cf',
    950: '#000000',
  },
}

SCSS

$custom: #57b9cf;
$custom-light: #91cedd;
$custom-dark: #000000;

JSON

{
  "hex": "#57b9cf",
  "rgb": {
    "r": 87,
    "g": 185,
    "b": 207
  },
  "hsl": {
    "h": 191,
    "s": 55.556,
    "l": 57.647
  },
  "oklch": {
    "l": 0.73548,
    "c": 0.09654,
    "h": 214.6
  },
  "luminance": 0.41229
}

Semantic roles & 50–950 ramp

primary

#57B9CF

secondary

#D9B2A9

accent

#6449DF

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1315

muted

#7E8283

Preview Lab

Preview with #57B9CF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →