#257EB0#257EB0

#257EB0 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.5% C 0.112 H 238.6°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#257EB0
RGB	rgb(37, 126, 176)
HSL	hsl(202, 65%, 42%)
HSV	hsv(202, 79%, 69%)
CMYK	cmyk(79%, 28.4%, 0%, 31%)
CIE-LAB	lab(50.03, -8.23, -33.76)
CIE-LCH	lch(50.03, 34.75, 256.31°)
OKLab	oklab(56.52% -0.0582 -0.0955)
OKLCH	oklch(56.52% 0.112 238.6)
XYZ	xyz(16.0572, 18.4477, 43.7804)
Luminance	0.1845 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257EB0 #B05725

analogous

#25B09D #257EB0 #2538B0

triadic

#257EB0 #B0257E #7EB025

tetradic

#257EB0 #9D25B0 #B05725 #38B025

square

#257EB0 #9D25B0 #B05725 #38B025

split-complementary

#257EB0 #B02538 #B09D25

monochromatic

#10364B #1A5A7D #257EB0 #3C9FD6 #6FB8E1

Accessibility & contrast

On white

4.48

#257EB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#257EB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257EB0

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257EB0	#FFFFFF	#000000	##000000
##257EB0	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667EB2

Deuteranopia (green-blind)

#5371AF

Tritanopia (blue-blind)

#008B8F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #257eb0;
/* rgb */ color: rgb(37, 126, 176);
/* oklch */ color: oklch(56.5% 0.112 238.6);

Tailwind

colors: {
  custom: {
    50: '#75a3c8',
    500: '#257eb0',
    950: '#000000',
  },
}

SCSS

$custom: #257eb0;
$custom-light: #75a3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#257eb0",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 176
  },
  "hsl": {
    "h": 201.583,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.56522,
    "c": 0.11185,
    "h": 238.6
  },
  "luminance": 0.1845
}

Semantic roles & 50–950 ramp

primary

#257EB0

secondary

#C78B6A

accent

#7C40E8

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #257EB0

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

Preview Lab → · Contrast checker → · Palette generator →