#57BBE9#57BBE9

#57BBE9 is a light, moderate cyan. Relative luminance 0.434; OKLCH L 75.1% C 0.114 H 230.9°. Best body text is #000000 at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#57BBE9
RGB	rgb(87, 187, 233)
HSL	hsl(199, 77%, 63%)
HSV	hsv(199, 63%, 91%)
CMYK	cmyk(62.7%, 19.7%, 0%, 8.6%)
CIE-LAB	lab(71.86, -15.59, -31.62)
CIE-LCH	lch(71.86, 35.25, 243.76°)
OKLab	oklab(75.08% -0.0719 -0.0884)
OKLCH	oklch(75.08% 0.114 230.9)
XYZ	xyz(36.4030, 43.4464, 83.5425)
Luminance	0.4345 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57BBE9 #E98557

analogous

#57E9CE #57BBE9 #5772E9

triadic

#57BBE9 #E957BB #BBE957

tetradic

#57BBE9 #CE57E9 #E98557 #72E957

square

#57BBE9 #CE57E9 #E98557 #72E957

split-complementary

#57BBE9 #E95772 #E9CE57

monochromatic

#177FAF #21A5E2 #57BBE9 #8DD1F0 #C3E7F7

Accessibility & contrast

On white

2.17

#57BBE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.69

#57BBE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #57BBE9

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57BBE9	#FFFFFF	#000000	##000000
##57BBE9	1.00	2.17	9.69	9.69
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.69	21.00	1.00	1.00
##000000	9.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B9EB

Deuteranopia (green-blind)

#90AAE8

Tritanopia (blue-blind)

#00C8CA

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #57bbe9;
/* rgb */ color: rgb(87, 187, 233);
/* oklch */ color: oklch(75.1% 0.114 230.9);

Tailwind

colors: {
  custom: {
    50: '#94cff0',
    500: '#57bbe9',
    950: '#000000',
  },
}

SCSS

$custom: #57bbe9;
$custom-light: #94cff0;
$custom-dark: #000000;

JSON

{
  "hex": "#57bbe9",
  "rgb": {
    "r": 87,
    "g": 187,
    "b": 233
  },
  "hsl": {
    "h": 198.904,
    "s": 76.842,
    "l": 62.745
  },
  "oklch": {
    "l": 0.75078,
    "c": 0.11397,
    "h": 230.9
  },
  "luminance": 0.4345
}

Semantic roles & 50–950 ramp

primary

#57BBE9

secondary

#E8C4B3

accent

#4D0CD9

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #57BBE9

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

Preview Lab → · Contrast checker → · Palette generator →