#257EA8#257EA8

#257EA8 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.1% C 0.104 H 233.9°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#257EA8
RGB	rgb(37, 126, 168)
HSL	hsl(199, 64%, 40%)
HSV	hsv(199, 78%, 66%)
CMYK	cmyk(78%, 25%, 0%, 34.1%)
CIE-LAB	lab(49.67, -11.12, -29.70)
CIE-LCH	lch(49.67, 31.72, 249.48°)
OKLab	oklab(56.11% -0.061 -0.0837)
OKLCH	oklch(56.11% 0.104 233.9)
XYZ	xyz(15.2888, 18.1403, 39.7338)
Luminance	0.1814 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257EA8 #A84F25

analogous

#25A891 #257EA8 #253CA8

triadic

#257EA8 #A8257E #7EA825

tetradic

#257EA8 #9125A8 #A84F25 #3CA825

square

#257EA8 #9125A8 #A84F25 #3CA825

split-complementary

#257EA8 #A8253C #A89125

monochromatic

#0F3344 #1A5876 #257EA8 #37A1D3 #69B9DE

Accessibility & contrast

On white

4.54

#257EA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#257EA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257EA8

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257EA8	#FFFFFF	#000000	##000000
##257EA8	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#697DAA

Deuteranopia (green-blind)

#5871A7

Tritanopia (blue-blind)

#00898C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #257ea8;
/* rgb */ color: rgb(37, 126, 168);
/* oklch */ color: oklch(56.1% 0.104 233.9);

Tailwind

colors: {
  custom: {
    50: '#74a3c2',
    500: '#257ea8',
    950: '#000000',
  },
}

SCSS

$custom: #257ea8;
$custom-light: #74a3c2;
$custom-dark: #000000;

JSON

{
  "hex": "#257ea8",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 168
  },
  "hsl": {
    "h": 199.237,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.56108,
    "c": 0.10358,
    "h": 233.9
  },
  "luminance": 0.18142
}

Semantic roles & 50–950 ramp

primary

#257EA8

secondary

#C48365

accent

#7641E7

background

#F7FAFB

surface

#EEF3F7

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #257EA8

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

Preview Lab → · Contrast checker → · Palette generator →