#257F99#257F99

#257F99 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.6% C 0.090 H 221.6°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#257F99
RGB	rgb(37, 127, 153)
HSL	hsl(193, 61%, 37%)
HSV	hsv(193, 76%, 60%)
CMYK	cmyk(75.8%, 17%, 0%, 40%)
CIE-LAB	lab(49.34, -16.95, -21.47)
CIE-LCH	lch(49.34, 27.35, 231.71°)
OKLab	oklab(55.64% -0.0677 -0.0601)
OKLCH	oklch(55.64% 0.09 221.6)
XYZ	xyz(14.0997, 17.8703, 32.8370)
Luminance	0.1787 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257F99 #993F25

analogous

#259979 #257F99 #254599

triadic

#257F99 #99257F #7F9925

tetradic

#257F99 #792599 #993F25 #459925

square

#257F99 #792599 #993F25 #459925

split-complementary

#257F99 #992545 #997925

monochromatic

#0D2D36 #195668 #257F99 #31A8CA #60BDD9

Accessibility & contrast

On white

4.59

#257F99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#257F99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #257F99

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257F99	#FFFFFF	#000000	##FFFFFF
##257F99	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#707C9A

Deuteranopia (green-blind)

#607099

Tritanopia (blue-blind)

#008787

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #257f99;
/* rgb */ color: rgb(37, 127, 153);
/* oklch */ color: oklch(55.6% 0.090 221.6);

Tailwind

colors: {
  custom: {
    50: '#72a4b7',
    500: '#257f99',
    950: '#000000',
  },
}

SCSS

$custom: #257f99;
$custom-light: #72a4b7;
$custom-dark: #000000;

JSON

{
  "hex": "#257f99",
  "rgb": {
    "r": 37,
    "g": 127,
    "b": 153
  },
  "hsl": {
    "h": 193.448,
    "s": 61.053,
    "l": 37.255
  },
  "oklch": {
    "l": 0.55635,
    "c": 0.09048,
    "h": 221.6
  },
  "luminance": 0.17872
}

Semantic roles & 50–950 ramp

primary

#257F99

secondary

#BE725C

accent

#6844E4

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #257F99

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

Preview Lab → · Contrast checker → · Palette generator →