#257CB0#257CB0

#257CB0 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.0% C 0.113 H 240.2°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#257CB0
RGB	rgb(37, 124, 176)
HSL	hsl(202, 65%, 42%)
HSV	hsv(202, 79%, 69%)
CMYK	cmyk(79%, 29.5%, 0%, 31%)
CIE-LAB	lab(49.42, -7.06, -34.72)
CIE-LCH	lch(49.42, 35.43, 258.51°)
OKLab	oklab(56.04% -0.0563 -0.0983)
OKLCH	oklch(56.04% 0.113 240.2)
XYZ	xyz(15.8040, 17.9413, 43.6960)
Luminance	0.1794 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257CB0 #B05925

analogous

#25B09F #257CB0 #2537B0

triadic

#257CB0 #B0257C #7CB025

tetradic

#257CB0 #9F25B0 #B05925 #37B025

square

#257CB0 #9F25B0 #B05925 #37B025

split-complementary

#257CB0 #B02537 #B09F25

monochromatic

#10354B #1A587D #257CB0 #3C9CD6 #6FB6E1

Accessibility & contrast

On white

4.58

#257CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#257CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257CB0

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257CB0	#FFFFFF	#000000	##000000
##257CB0	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB2

Deuteranopia (green-blind)

#5170AF

Tritanopia (blue-blind)

#00898E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #257cb0;
/* rgb */ color: rgb(37, 124, 176);
/* oklch */ color: oklch(56.0% 0.113 240.2);

Tailwind

colors: {
  custom: {
    50: '#75a1c8',
    500: '#257cb0',
    950: '#000000',
  },
}

SCSS

$custom: #257cb0;
$custom-light: #75a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#257cb0",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 176
  },
  "hsl": {
    "h": 202.446,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.56038,
    "c": 0.1133,
    "h": 240.2
  },
  "luminance": 0.17943
}

Semantic roles & 50–950 ramp

primary

#257CB0

secondary

#C78D6A

accent

#7F40E8

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #257CB0

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

Preview Lab → · Contrast checker → · Palette generator →