#257AC4#257AC4

#257AC4 is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.7% C 0.139 H 249.5°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#257AC4
RGB	rgb(37, 122, 196)
HSL	hsl(208, 68%, 46%)
HSV	hsv(208, 81%, 77%)
CMYK	cmyk(81.1%, 37.8%, 0%, 23.1%)
CIE-LAB	lab(49.85, 1.59, -45.56)
CIE-LCH	lch(49.85, 45.59, 271.99°)
OKLab	oklab(56.71% -0.0487 -0.13)
OKLCH	oklch(56.71% 0.139 249.5)
XYZ	xyz(17.6825, 18.2957, 54.8133)
Luminance	0.1830 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257AC4 #C46F25

analogous

#25C4BE #257AC4 #252AC4

triadic

#257AC4 #C4257A #7AC425

tetradic

#257AC4 #BE25C4 #C46F25 #2AC425

square

#257AC4 #BE25C4 #C46F25 #2AC425

split-complementary

#257AC4 #C4252A #C4BE25

monochromatic

#123A5D #1B5A91 #257AC4 #4998DD #7DB5E6

Accessibility & contrast

On white

4.51

#257AC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#257AC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257AC4

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257AC4	#FFFFFF	#000000	##000000
##257AC4	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577EC7

Deuteranopia (green-blind)

#3E70C3

Tritanopia (blue-blind)

#008C95

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #257ac4;
/* rgb */ color: rgb(37, 122, 196);
/* oklch */ color: oklch(56.7% 0.139 249.5);

Tailwind

colors: {
  custom: {
    50: '#79a0d6',
    500: '#257ac4',
    950: '#000000',
  },
}

SCSS

$custom: #257ac4;
$custom-light: #79a0d6;
$custom-dark: #000000;

JSON

{
  "hex": "#257ac4",
  "rgb": {
    "r": 37,
    "g": 122,
    "b": 196
  },
  "hsl": {
    "h": 207.925,
    "s": 68.24,
    "l": 45.686
  },
  "oklch": {
    "l": 0.56712,
    "c": 0.13884,
    "h": 249.5
  },
  "luminance": 0.18298
}

Semantic roles & 50–950 ramp

primary

#257AC4

secondary

#CF9F76

accent

#8E3DEB

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #257AC4

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

Preview Lab → · Contrast checker → · Palette generator →