#257DB0#257DB0

#257DB0 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.3% C 0.113 H 239.4°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#257DB0
RGB	rgb(37, 125, 176)
HSL	hsl(202, 65%, 42%)
HSV	hsv(202, 79%, 69%)
CMYK	cmyk(79%, 29%, 0%, 31%)
CIE-LAB	lab(49.73, -7.64, -34.24)
CIE-LCH	lch(49.73, 35.09, 257.42°)
OKLab	oklab(56.28% -0.0573 -0.0969)
OKLCH	oklch(56.28% 0.113 239.4)
XYZ	xyz(15.9299, 18.1932, 43.7379)
Luminance	0.1820 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257DB0 #B05825

analogous

#25B09E #257DB0 #2538B0

triadic

#257DB0 #B0257D #7DB025

tetradic

#257DB0 #9E25B0 #B05825 #38B025

square

#257DB0 #9E25B0 #B05825 #38B025

split-complementary

#257DB0 #B02538 #B09E25

monochromatic

#10354B #1A597D #257DB0 #3C9ED6 #6FB7E1

Accessibility & contrast

On white

4.53

#257DB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#257DB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257DB0

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257DB0	#FFFFFF	#000000	##000000
##257DB0	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657DB2

Deuteranopia (green-blind)

#5271AF

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #257db0;
/* rgb */ color: rgb(37, 125, 176);
/* oklch */ color: oklch(56.3% 0.113 239.4);

Tailwind

colors: {
  custom: {
    50: '#75a2c8',
    500: '#257db0',
    950: '#000000',
  },
}

SCSS

$custom: #257db0;
$custom-light: #75a2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#257db0",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 176
  },
  "hsl": {
    "h": 202.014,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.5628,
    "c": 0.11256,
    "h": 239.4
  },
  "luminance": 0.18195
}

Semantic roles & 50–950 ramp

primary

#257DB0

secondary

#C78C6A

accent

#7D40E8

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #257DB0

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

Preview Lab → · Contrast checker → · Palette generator →