#257AB0#257AB0

#257AB0 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.6% C 0.115 H 241.7°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#257AB0
RGB	rgb(37, 122, 176)
HSL	hsl(203, 65%, 42%)
HSV	hsv(203, 79%, 69%)
CMYK	cmyk(79%, 30.7%, 0%, 31%)
CIE-LAB	lab(48.82, -5.88, -35.68)
CIE-LCH	lch(48.82, 36.16, 260.64°)
OKLab	oklab(55.56% -0.0544 -0.1011)
OKLCH	oklch(55.56% 0.115 241.7)
XYZ	xyz(15.5559, 17.4451, 43.6133)
Luminance	0.1745 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257AB0 #B05B25

analogous

#25B0A1 #257AB0 #2535B0

triadic

#257AB0 #B0257A #7AB025

tetradic

#257AB0 #A125B0 #B05B25 #35B025

square

#257AB0 #A125B0 #B05B25 #35B025

split-complementary

#257AB0 #B02535 #B0A125

monochromatic

#10344B #1A577D #257AB0 #3C9AD6 #6FB4E1

Accessibility & contrast

On white

4.68

#257AB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#257AB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257AB0

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257AB0	#FFFFFF	#000000	##FFFFFF
##257AB0	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#617BB2

Deuteranopia (green-blind)

#4E6EAF

Tritanopia (blue-blind)

#00878D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #257ab0;
/* rgb */ color: rgb(37, 122, 176);
/* oklch */ color: oklch(55.6% 0.115 241.7);

Tailwind

colors: {
  custom: {
    50: '#75a0c8',
    500: '#257ab0',
    950: '#000000',
  },
}

SCSS

$custom: #257ab0;
$custom-light: #75a0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#257ab0",
  "rgb": {
    "r": 37,
    "g": 122,
    "b": 176
  },
  "hsl": {
    "h": 203.309,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.55556,
    "c": 0.11484,
    "h": 241.7
  },
  "luminance": 0.17447
}

Semantic roles & 50–950 ramp

primary

#257AB0

secondary

#C78E6A

accent

#8140E8

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #257AB0

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

Preview Lab → · Contrast checker → · Palette generator →