#257CA1#257CA1

#257CA1 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.3% C 0.098 H 231.1°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#257CA1
RGB	rgb(37, 124, 161)
HSL	hsl(198, 63%, 39%)
HSV	hsv(198, 77%, 63%)
CMYK	cmyk(77%, 23%, 0%, 36.9%)
CIE-LAB	lab(48.74, -12.48, -27.08)
CIE-LCH	lch(48.74, 29.81, 245.26°)
OKLab	oklab(55.26% -0.0615 -0.0762)
OKLCH	oklch(55.26% 0.098 231.1)
XYZ	xyz(14.4010, 17.3801, 36.3070)
Luminance	0.1738 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257CA1 #A14A25

analogous

#25A188 #257CA1 #253EA1

triadic

#257CA1 #A1257C #7CA125

tetradic

#257CA1 #8825A1 #A14A25 #3EA125

square

#257CA1 #8825A1 #A14A25 #3EA125

split-complementary

#257CA1 #A1253E #A18825

monochromatic

#0E2F3D #1A566F #257CA1 #33A1D0 #65B8DC

Accessibility & contrast

On white

4.69

#257CA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#257CA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257CA1

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257CA1	#FFFFFF	#000000	##FFFFFF
##257CA1	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697AA3

Deuteranopia (green-blind)

#596FA0

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #257ca1;
/* rgb */ color: rgb(37, 124, 161);
/* oklch */ color: oklch(55.3% 0.098 231.1);

Tailwind

colors: {
  custom: {
    50: '#73a2bd',
    500: '#257ca1',
    950: '#000000',
  },
}

SCSS

$custom: #257ca1;
$custom-light: #73a2bd;
$custom-dark: #000000;

JSON

{
  "hex": "#257ca1",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 161
  },
  "hsl": {
    "h": 197.903,
    "s": 62.626,
    "l": 38.824
  },
  "oklch": {
    "l": 0.55263,
    "c": 0.09792,
    "h": 231.1
  },
  "luminance": 0.17382
}

Semantic roles & 50–950 ramp

primary

#257CA1

secondary

#C17D61

accent

#7342E6

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #257CA1

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

Preview Lab → · Contrast checker → · Palette generator →