#257CC4#257CC4

#257CC4 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.2% C 0.137 H 248.4°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#257CC4
RGB	rgb(37, 124, 196)
HSL	hsl(207, 68%, 46%)
HSV	hsv(207, 81%, 77%)
CMYK	cmyk(81.1%, 36.7%, 0%, 23.1%)
CIE-LAB	lab(50.44, 0.37, -44.62)
CIE-LCH	lch(50.44, 44.63, 270.48°)
OKLab	oklab(57.18% -0.0504 -0.1272)
OKLCH	oklch(57.18% 0.137 248.4)
XYZ	xyz(17.9306, 18.7919, 54.8960)
Luminance	0.1879 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257CC4 #C46D25

analogous

#25C4BC #257CC4 #252CC4

triadic

#257CC4 #C4257C #7CC425

tetradic

#257CC4 #BC25C4 #C46D25 #2CC425

square

#257CC4 #BC25C4 #C46D25 #2CC425

split-complementary

#257CC4 #C4252C #C4BC25

monochromatic

#123B5D #1B5B91 #257CC4 #499ADD #7DB7E6

Accessibility & contrast

On white

4.41

#257CC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#257CC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257CC4

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257CC4	#FFFFFF	#000000	##000000
##257CC4	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A80C7

Deuteranopia (green-blind)

#4272C3

Tritanopia (blue-blind)

#008D96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #257cc4;
/* rgb */ color: rgb(37, 124, 196);
/* oklch */ color: oklch(57.2% 0.137 248.4);

Tailwind

colors: {
  custom: {
    50: '#79a1d6',
    500: '#257cc4',
    950: '#000000',
  },
}

SCSS

$custom: #257cc4;
$custom-light: #79a1d6;
$custom-dark: #000000;

JSON

{
  "hex": "#257cc4",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 196
  },
  "hsl": {
    "h": 207.17,
    "s": 68.24,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57175,
    "c": 0.13686,
    "h": 248.4
  },
  "luminance": 0.18794
}

Semantic roles & 50–950 ramp

primary

#257CC4

secondary

#CF9E76

accent

#8C3DEB

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #257CC4

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

Preview Lab → · Contrast checker → · Palette generator →