#257C99#257C99

#257C99 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 54.9% C 0.091 H 224.8°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#257C99
RGB	rgb(37, 124, 153)
HSL	hsl(195, 61%, 37%)
HSV	hsv(195, 76%, 60%)
CMYK	cmyk(75.8%, 19%, 0%, 40%)
CIE-LAB	lab(48.39, -15.29, -22.92)
CIE-LCH	lch(48.39, 27.55, 236.30°)
OKLab	oklab(54.88% -0.0646 -0.0642)
OKLCH	oklch(54.88% 0.091 224.8)
XYZ	xyz(13.7180, 17.1069, 32.7098)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257C99 #994225

analogous

#25997C #257C99 #254299

triadic

#257C99 #99257C #7C9925

tetradic

#257C99 #7C2599 #994225 #429925

square

#257C99 #7C2599 #994225 #429925

split-complementary

#257C99 #992542 #997C25

monochromatic

#0D2C36 #195468 #257C99 #31A4CA #60BAD9

Accessibility & contrast

On white

4.75

#257C99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#257C99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257C99

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257C99	#FFFFFF	#000000	##FFFFFF
##257C99	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C799A

Deuteranopia (green-blind)

#5C6E99

Tritanopia (blue-blind)

#008585

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #257c99;
/* rgb */ color: rgb(37, 124, 153);
/* oklch */ color: oklch(54.9% 0.091 224.8);

Tailwind

colors: {
  custom: {
    50: '#71a2b7',
    500: '#257c99',
    950: '#000000',
  },
}

SCSS

$custom: #257c99;
$custom-light: #71a2b7;
$custom-dark: #000000;

JSON

{
  "hex": "#257c99",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 153
  },
  "hsl": {
    "h": 195,
    "s": 61.053,
    "l": 37.255
  },
  "oklch": {
    "l": 0.54878,
    "c": 0.0911,
    "h": 224.8
  },
  "luminance": 0.17109
}

Semantic roles & 50–950 ramp

primary

#257C99

secondary

#BE755C

accent

#6C44E4

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #257C99

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

Preview Lab → · Contrast checker → · Palette generator →