#257EB2#257EB2

#257EB2 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.114 H 239.7°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#257EB2
RGB	rgb(37, 126, 178)
HSL	hsl(202, 66%, 42%)
HSV	hsv(202, 79%, 70%)
CMYK	cmyk(79.2%, 29.2%, 0%, 30.2%)
CIE-LAB	lab(50.13, -7.50, -34.77)
CIE-LCH	lch(50.13, 35.57, 257.83°)
OKLab	oklab(56.63% -0.0576 -0.0984)
OKLCH	oklch(56.63% 0.114 239.7)
XYZ	xyz(16.2565, 18.5274, 44.8302)
Luminance	0.1853 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257EB2 #B25925

analogous

#25B2A0 #257EB2 #2537B2

triadic

#257EB2 #B2257E #7EB225

tetradic

#257EB2 #A025B2 #B25925 #37B225

square

#257EB2 #A025B2 #B25925 #37B225

split-complementary

#257EB2 #B22537 #B2A025

monochromatic

#10364D #1A5A7F #257EB2 #3D9ED7 #70B8E1

Accessibility & contrast

On white

4.46

#257EB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#257EB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257EB2

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257EB2	#FFFFFF	#000000	##000000
##257EB2	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB4

Deuteranopia (green-blind)

#5271B1

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #257eb2;
/* rgb */ color: rgb(37, 126, 178);
/* oklch */ color: oklch(56.6% 0.114 239.7);

Tailwind

colors: {
  custom: {
    50: '#76a3c9',
    500: '#257eb2',
    950: '#000000',
  },
}

SCSS

$custom: #257eb2;
$custom-light: #76a3c9;
$custom-dark: #000000;

JSON

{
  "hex": "#257eb2",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 178
  },
  "hsl": {
    "h": 202.128,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.56629,
    "c": 0.11402,
    "h": 239.7
  },
  "luminance": 0.18529
}

Semantic roles & 50–950 ramp

primary

#257EB2

secondary

#C88D6B

accent

#7E3FE9

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #257EB2

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

Preview Lab → · Contrast checker → · Palette generator →