#257CD4#257CD4

#257CD4 is a mid, vivid cyan. Relative luminance 0.196; OKLCH L 58.2% C 0.157 H 252.7°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#257CD4
RGB	rgb(37, 124, 212)
HSL	hsl(210, 70%, 49%)
HSV	hsv(210, 83%, 83%)
CMYK	cmyk(82.5%, 41.5%, 0%, 16.9%)
CIE-LAB	lab(51.34, 6.41, -52.31)
CIE-LCH	lch(51.34, 52.70, 276.99°)
OKLab	oklab(58.16% -0.0466 -0.1498)
OKLCH	oklch(58.16% 0.157 252.7)
XYZ	xyz(19.8498, 19.5596, 65.0038)
Luminance	0.1956 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257CD4 #D47D25

analogous

#25D4D4 #257CD4 #2525D4

triadic

#257CD4 #D4257C #7CD425

tetradic

#257CD4 #D425D4 #D47D25 #25D425

square

#257CD4 #D425D4 #D47D25 #25D425

split-complementary

#257CD4 #D42525 #D4D425

monochromatic

#133F6C #1C5EA0 #257CD4 #559BE1 #89B9EA

Accessibility & contrast

On white

4.27

#257CD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#257CD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257CD4

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257CD4	#FFFFFF	#000000	##000000
##257CD4	1.00	4.27	4.91	4.91
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5083D7

Deuteranopia (green-blind)

#3173D2

Tritanopia (blue-blind)

#00919D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #257cd4;
/* rgb */ color: rgb(37, 124, 212);
/* oklch */ color: oklch(58.2% 0.157 252.7);

Tailwind

colors: {
  custom: {
    50: '#7da1e2',
    500: '#257cd4',
    950: '#000000',
  },
}

SCSS

$custom: #257cd4;
$custom-light: #7da1e2;
$custom-dark: #000000;

JSON

{
  "hex": "#257cd4",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 212
  },
  "hsl": {
    "h": 210.171,
    "s": 70.281,
    "l": 48.824
  },
  "oklch": {
    "l": 0.58163,
    "c": 0.15686,
    "h": 252.7
  },
  "luminance": 0.19562
}

Semantic roles & 50–950 ramp

primary

#257CD4

secondary

#D4AB81

accent

#943BED

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #257CD4

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

Preview Lab → · Contrast checker → · Palette generator →