#1D578D#1D578D

#1D578D is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.8% C 0.107 H 250.3°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX#1D578D
RGBrgb(29, 87, 141)
HSLhsl(209, 66%, 33%)
HSVhsv(209, 79%, 55%)
CMYKcmyk(79.4%, 38.3%, 0%, 44.7%)
CIE-LABlab(35.98, 1.45, -35.20)
CIE-LCHlch(35.98, 35.23, 272.35°)
OKLaboklab(44.78% -0.036 -0.1003)
OKLCHoklch(44.78% 0.107 250.3)
XYZxyz(8.7208, 8.9997, 26.4716)
Luminance0.0900 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D578D #8D531D
analogous
#1D8D8B #1D578D #1D1F8D
triadic
#1D578D #8D1D57 #578D1D
tetradic
#1D578D #8B1D8D #8D531D #1F8D1D
square
#1D578D #8B1D8D #8D531D #1F8D1D
split-complementary
#1D578D #8D1D1F #8D8B1D
monochromatic
#081827 #13385A #1D578D #2776C0 #4B95DA

Accessibility & contrast

On white

7.50
#1D578D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.80
#1D578D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D578D
7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D578D#FFFFFF#000000##FFFFFF
##1D578D1.007.502.807.50
#FFFFFF7.501.0021.001.00
#0000002.8021.001.0021.00
##FFFFFF7.501.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3E5A8F
Deuteranopia (green-blind)
#2D508C
Tritanopia (blue-blind)
#00646B
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #1d578d;
/* rgb */ color: rgb(29, 87, 141);
/* oklch */ color: oklch(44.8% 0.107 250.3);
Tailwind
colors: {
  custom: {
    50: '#6b86ae',
    500: '#1d578d',
    950: '#000000',
  },
}
SCSS
$custom: #1d578d;
$custom-light: #6b86ae;
$custom-dark: #000000;
JSON
{
  "hex": "#1d578d",
  "rgb": {
    "r": 29,
    "g": 87,
    "b": 141
  },
  "hsl": {
    "h": 208.929,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.44782,
    "c": 0.10659,
    "h": 250.3
  },
  "luminance": 0.09001
}

Semantic roles & 50–950 ramp

primary
#1D578D
secondary
#BC814A
accent
#913FE9
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#080B10
muted
#7A7C7F

Preview Lab

Preview with #1D578D

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

Preview Lab → · Contrast checker → · Palette generator →

#1D578D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva