#257FA1#257FA1

#257FA1 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.0% C 0.097 H 228.1°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#257FA1
RGB	rgb(37, 127, 161)
HSL	hsl(196, 63%, 39%)
HSV	hsv(196, 77%, 63%)
CMYK	cmyk(77%, 21.1%, 0%, 36.9%)
CIE-LAB	lab(49.67, -14.17, -25.63)
CIE-LCH	lch(49.67, 29.28, 241.06°)
OKLab	oklab(56.01% -0.0645 -0.072)
OKLCH	oklch(56.01% 0.097 228.1)
XYZ	xyz(14.7827, 18.1435, 36.4342)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257FA1 #A14725

analogous

#25A185 #257FA1 #2541A1

triadic

#257FA1 #A1257F #7FA125

tetradic

#257FA1 #8525A1 #A14725 #41A125

square

#257FA1 #8525A1 #A14725 #41A125

split-complementary

#257FA1 #A12541 #A18525

monochromatic

#0E303D #1A586F #257FA1 #33A5D0 #65BBDC

Accessibility & contrast

On white

4.54

#257FA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#257FA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257FA1

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257FA1	#FFFFFF	#000000	##000000
##257FA1	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7DA3

Deuteranopia (green-blind)

#5C71A1

Tritanopia (blue-blind)

#00898A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #257fa1;
/* rgb */ color: rgb(37, 127, 161);
/* oklch */ color: oklch(56.0% 0.097 228.1);

Tailwind

colors: {
  custom: {
    50: '#73a4bd',
    500: '#257fa1',
    950: '#000000',
  },
}

SCSS

$custom: #257fa1;
$custom-light: #73a4bd;
$custom-dark: #000000;

JSON

{
  "hex": "#257fa1",
  "rgb": {
    "r": 37,
    "g": 127,
    "b": 161
  },
  "hsl": {
    "h": 196.452,
    "s": 62.626,
    "l": 38.824
  },
  "oklch": {
    "l": 0.5601,
    "c": 0.09667,
    "h": 228.1
  },
  "luminance": 0.18145
}

Semantic roles & 50–950 ramp

primary

#257FA1

secondary

#C17B61

accent

#6F42E6

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #257FA1

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

Preview Lab → · Contrast checker → · Palette generator →