#257C8F#257C8F

#257C8F is a mid, moderate cyan. Relative luminance 0.168; OKLCH L 54.4% C 0.085 H 215.6°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#257C8F
RGB	rgb(37, 124, 143)
HSL	hsl(191, 59%, 35%)
HSV	hsv(191, 74%, 56%)
CMYK	cmyk(74.1%, 13.3%, 0%, 43.9%)
CIE-LAB	lab(47.99, -18.71, -17.66)
CIE-LCH	lch(47.99, 25.73, 223.35°)
OKLab	oklab(54.42% -0.0687 -0.0492)
OKLCH	oklch(54.42% 0.085 215.6)
XYZ	xyz(12.9264, 16.7903, 28.5409)
Luminance	0.1679 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257C8F #8F3825

analogous

#258F6D #257C8F #25478F

triadic

#257C8F #8F257C #7C8F25

tetradic

#257C8F #6D258F #8F3825 #478F25

square

#257C8F #6D258F #8F3825 #478F25

split-complementary

#257C8F #8F2547 #8F6D25

monochromatic

#0C282E #18525E #257C8F #32A6C0 #5ABED4

Accessibility & contrast

On white

4.82

#257C8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#257C8F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257C8F

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257C8F	#FFFFFF	#000000	##FFFFFF
##257C8F	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7890

Deuteranopia (green-blind)

#606D8F

Tritanopia (blue-blind)

#008382

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #257c8f;
/* rgb */ color: rgb(37, 124, 143);
/* oklch */ color: oklch(54.4% 0.085 215.6);

Tailwind

colors: {
  custom: {
    50: '#70a2af',
    500: '#257c8f',
    950: '#000000',
  },
}

SCSS

$custom: #257c8f;
$custom-light: #70a2af;
$custom-dark: #000000;

JSON

{
  "hex": "#257c8f",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 143
  },
  "hsl": {
    "h": 190.755,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.54424,
    "c": 0.08451,
    "h": 215.6
  },
  "luminance": 0.16792
}

Semantic roles & 50–950 ramp

primary

#257C8F

secondary

#B96857

accent

#6246E2

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080F10

muted

#7B7E7F

Preview Lab

Preview with #257C8F

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

Preview Lab → · Contrast checker → · Palette generator →