#257EB1#257EB1

#257EB1 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.113 H 239.2°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#257EB1
RGB	rgb(37, 126, 177)
HSL	hsl(202, 65%, 42%)
HSV	hsv(202, 79%, 69%)
CMYK	cmyk(79.1%, 28.8%, 0%, 30.6%)
CIE-LAB	lab(50.08, -7.86, -34.27)
CIE-LCH	lch(50.08, 35.16, 257.08°)
OKLab	oklab(56.58% -0.0579 -0.097)
OKLCH	oklch(56.58% 0.113 239.2)
XYZ	xyz(16.1565, 18.4874, 44.3034)
Luminance	0.1849 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257EB1 #B15825

analogous

#25B19E #257EB1 #2538B1

triadic

#257EB1 #B1257E #7EB125

tetradic

#257EB1 #9E25B1 #B15825 #38B125

square

#257EB1 #9E25B1 #B15825 #38B125

split-complementary

#257EB1 #B12538 #B19E25

monochromatic

#10364C #1A5A7E #257EB1 #3D9ED6 #6FB8E1

Accessibility & contrast

On white

4.47

#257EB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#257EB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257EB1

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257EB1	#FFFFFF	#000000	##000000
##257EB1	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667EB3

Deuteranopia (green-blind)

#5371B0

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #257eb1;
/* rgb */ color: rgb(37, 126, 177);
/* oklch */ color: oklch(56.6% 0.113 239.2);

Tailwind

colors: {
  custom: {
    50: '#76a3c8',
    500: '#257eb1',
    950: '#000000',
  },
}

SCSS

$custom: #257eb1;
$custom-light: #76a3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#257eb1",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 177
  },
  "hsl": {
    "h": 201.857,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.56575,
    "c": 0.11293,
    "h": 239.2
  },
  "luminance": 0.18489
}

Semantic roles & 50–950 ramp

primary

#257EB1

secondary

#C88C6A

accent

#7D3FE8

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #257EB1

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

Preview Lab → · Contrast checker → · Palette generator →