#257E9D#257E9D

#257E9D is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.6% C 0.094 H 226.0°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#257E9D
RGB	rgb(37, 126, 157)
HSL	hsl(196, 62%, 38%)
HSV	hsv(196, 76%, 62%)
CMYK	cmyk(76.4%, 19.7%, 0%, 38.4%)
CIE-LAB	lab(49.19, -15.01, -24.04)
CIE-LCH	lch(49.19, 28.34, 238.02°)
OKLab	oklab(55.57% -0.0651 -0.0674)
OKLCH	oklch(55.57% 0.094 226)
XYZ	xyz(14.3071, 17.7476, 34.5633)
Luminance	0.1775 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257E9D #9D4425

analogous

#259D80 #257E9D #25429D

triadic

#257E9D #9D257E #7E9D25

tetradic

#257E9D #80259D #9D4425 #429D25

square

#257E9D #80259D #9D4425 #429D25

split-complementary

#257E9D #9D2542 #9D8025

monochromatic

#0E2F3A #19566B #257E9D #31A6CE #62BBDA

Accessibility & contrast

On white

4.62

#257E9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#257E9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #257E9D

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257E9D	#FFFFFF	#000000	##FFFFFF
##257E9D	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7B9F

Deuteranopia (green-blind)

#5D709D

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #257e9d;
/* rgb */ color: rgb(37, 126, 157);
/* oklch */ color: oklch(55.6% 0.094 226.0);

Tailwind

colors: {
  custom: {
    50: '#72a3ba',
    500: '#257e9d',
    950: '#000000',
  },
}

SCSS

$custom: #257e9d;
$custom-light: #72a3ba;
$custom-dark: #000000;

JSON

{
  "hex": "#257e9d",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 157
  },
  "hsl": {
    "h": 195.5,
    "s": 61.856,
    "l": 38.039
  },
  "oklch": {
    "l": 0.55569,
    "c": 0.09369,
    "h": 226
  },
  "luminance": 0.17749
}

Semantic roles & 50–950 ramp

primary

#257E9D

secondary

#BF775E

accent

#6D43E5

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #257E9D

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

Preview Lab → · Contrast checker → · Palette generator →