#1D557D#1D557D

#1D557D is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.3% C 0.088 H 243.7°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX#1D557D
RGBrgb(29, 85, 125)
HSLhsl(205, 62%, 30%)
HSVhsv(205, 77%, 49%)
CMYKcmyk(76.8%, 32%, 0%, 51%)
CIE-LABlab(34.47, -3.53, -27.78)
CIE-LCHlch(34.47, 28.01, 262.77°)
OKLaboklab(43.31% -0.0388 -0.0787)
OKLCHoklch(43.31% 0.088 243.7)
XYZxyz(7.4554, 8.2380, 20.5952)
Luminance0.0824 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D557D #7D451D
analogous
#1D7D75 #1D557D #1D257D
triadic
#1D557D #7D1D55 #557D1D
tetradic
#1D557D #751D7D #7D451D #257D1D
square
#1D557D #751D7D #7D451D #257D1D
split-complementary
#1D557D #7D1D25 #7D751D
monochromatic
#06111A #11334B #1D557D #2977AF #4196D3

Accessibility & contrast

On white

7.93
#1D557D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.65
#1D557D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D557D
7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D557D#FFFFFF#000000##FFFFFF
##1D557D1.007.932.657.93
#FFFFFF7.931.0021.001.00
#0000002.6521.001.0021.00
##FFFFFF7.931.0021.001.00

Color blindness preview

Protanopia (red-blind)
#43567F
Deuteranopia (green-blind)
#354D7C
Tritanopia (blue-blind)
#005F63
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #1d557d;
/* rgb */ color: rgb(29, 85, 125);
/* oklch */ color: oklch(43.3% 0.088 243.7);
Tailwind
colors: {
  custom: {
    50: '#6784a3',
    500: '#1d557d',
    950: '#000000',
  },
}
SCSS
$custom: #1d557d;
$custom-light: #6784a3;
$custom-dark: #000000;
JSON
{
  "hex": "#1d557d",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 125
  },
  "hsl": {
    "h": 205,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.43307,
    "c": 0.08775,
    "h": 243.7
  },
  "luminance": 0.08239
}

Semantic roles & 50–950 ramp

primary
#1D557D
secondary
#B17245
accent
#8642E5
background
#F6F8FA
surface
#EBEFF3
border
#C6CACD
text
#070A0F
muted
#7A7C7F

Preview Lab

Preview with #1D557D

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

Preview Lab → · Contrast checker → · Palette generator →

#1D557D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva