#557D8D#557D8D

#557D8D is a mid, muted cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.051 H 224.9°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#557D8D
RGB	rgb(85, 125, 141)
HSL	hsl(197, 25%, 44%)
HSV	hsv(197, 40%, 55%)
CMYK	cmyk(39.7%, 11.3%, 0%, 44.7%)
CIE-LAB	lab(50.12, -9.59, -13.08)
CIE-LCH	lch(50.12, 16.21, 233.76°)
OKLab	oklab(56.62% -0.036 -0.0359)
OKLCH	oklch(56.62% 0.051 224.9)
XYZ	xyz(15.8860, 18.5206, 27.9319)
Luminance	0.1852 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557D8D #8D6555

analogous

#558D81 #557D8D #55618D

triadic

#557D8D #8D557D #7D8D55

tetradic

#557D8D #81558D #8D6555 #618D55

square

#557D8D #81558D #8D6555 #618D55

split-complementary

#557D8D #8D5561 #8D8155

monochromatic

#273941 #3E5B67 #557D8D #749BAB #9AB7C2

Accessibility & contrast

On white

4.46

#557D8D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#557D8D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557D8D

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557D8D	#FFFFFF	#000000	##000000
##557D8D	1.00	4.46	4.70	4.70
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#747B8E

Deuteranopia (green-blind)

#6C748D

Tritanopia (blue-blind)

#408282

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #557d8d;
/* rgb */ color: rgb(85, 125, 141);
/* oklch */ color: oklch(56.6% 0.051 224.9);

Tailwind

colors: {
  custom: {
    50: '#87a2ae',
    500: '#557d8d',
    950: '#000000',
  },
}

SCSS

$custom: #557d8d;
$custom-light: #87a2ae;
$custom-dark: #000000;

JSON

{
  "hex": "#557d8d",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 141
  },
  "hsl": {
    "h": 197.143,
    "s": 24.779,
    "l": 44.314
  },
  "oklch": {
    "l": 0.56621,
    "c": 0.0509,
    "h": 224.9
  },
  "luminance": 0.18522
}

Semantic roles & 50–950 ramp

primary

#557D8D

secondary

#B0988E

accent

#8067C1

background

#F8FAFA

surface

#F0F3F4

border

#CBCDCE

text

#0B0F10

muted

#7C7F7F

Preview Lab

Preview with #557D8D

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

Preview Lab → · Contrast checker → · Palette generator →