#257DA8#257DA8

#257DA8 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.9% C 0.104 H 234.8°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#257DA8
RGB	rgb(37, 125, 168)
HSL	hsl(200, 64%, 40%)
HSV	hsv(200, 78%, 66%)
CMYK	cmyk(78%, 25.6%, 0%, 34.1%)
CIE-LAB	lab(49.36, -10.54, -30.19)
CIE-LCH	lch(49.36, 31.97, 250.74°)
OKLab	oklab(55.86% -0.06 -0.0851)
OKLCH	oklch(55.86% 0.104 234.8)
XYZ	xyz(15.1616, 17.8859, 39.6914)
Luminance	0.1789 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257DA8 #A85025

analogous

#25A892 #257DA8 #253BA8

triadic

#257DA8 #A8257D #7DA825

tetradic

#257DA8 #9225A8 #A85025 #3BA825

square

#257DA8 #9225A8 #A85025 #3BA825

split-complementary

#257DA8 #A8253B #A89225

monochromatic

#0F3244 #1A5876 #257DA8 #37A0D3 #69B8DE

Accessibility & contrast

On white

4.59

#257DA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#257DA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #257DA8

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257DA8	#FFFFFF	#000000	##FFFFFF
##257DA8	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687CAA

Deuteranopia (green-blind)

#5670A7

Tritanopia (blue-blind)

#00888C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #257da8;
/* rgb */ color: rgb(37, 125, 168);
/* oklch */ color: oklch(55.9% 0.104 234.8);

Tailwind

colors: {
  custom: {
    50: '#74a2c2',
    500: '#257da8',
    950: '#000000',
  },
}

SCSS

$custom: #257da8;
$custom-light: #74a2c2;
$custom-dark: #000000;

JSON

{
  "hex": "#257da8",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 168
  },
  "hsl": {
    "h": 199.695,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.55862,
    "c": 0.10415,
    "h": 234.8
  },
  "luminance": 0.17888
}

Semantic roles & 50–950 ramp

primary

#257DA8

secondary

#C48465

accent

#7741E7

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #257DA8

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

Preview Lab → · Contrast checker → · Palette generator →