#1D578E#1D578E

#1D578E is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.8% C 0.108 H 250.7°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX#1D578E
RGBrgb(29, 87, 142)
HSLhsl(209, 66%, 34%)
HSVhsv(209, 80%, 56%)
CMYKcmyk(79.6%, 38.7%, 0%, 44.3%)
CIE-LABlab(36.04, 1.84, -35.72)
CIE-LCHlch(36.04, 35.76, 272.95°)
OKLaboklab(44.85% -0.0357 -0.1018)
OKLCHoklch(44.85% 0.108 250.7)
XYZxyz(8.7955, 9.0296, 26.8653)
Luminance0.0903 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D578E #8E541D
analogous
#1D8E8C #1D578E #1D1E8E
triadic
#1D578E #8E1D57 #578E1D
tetradic
#1D578E #8C1D8E #8E541D #1E8E1D
square
#1D578E #8C1D8E #8E541D #1E8E1D
split-complementary
#1D578E #8E1D1E #8E8C1D
monochromatic
#081928 #13385B #1D578E #2776C1 #4B95DA

Accessibility & contrast

On white

7.48
#1D578E on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.81
#1D578E on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D578E
7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D578E#FFFFFF#000000##FFFFFF
##1D578E1.007.482.817.48
#FFFFFF7.481.0021.001.00
#0000002.8121.001.0021.00
##FFFFFF7.481.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3D5A90
Deuteranopia (green-blind)
#2C508D
Tritanopia (blue-blind)
#00646B
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #1d578e;
/* rgb */ color: rgb(29, 87, 142);
/* oklch */ color: oklch(44.8% 0.108 250.7);
Tailwind
colors: {
  custom: {
    50: '#6b86af',
    500: '#1d578e',
    950: '#000000',
  },
}
SCSS
$custom: #1d578e;
$custom-light: #6b86af;
$custom-dark: #000000;
JSON
{
  "hex": "#1d578e",
  "rgb": {
    "r": 29,
    "g": 87,
    "b": 142
  },
  "hsl": {
    "h": 209.204,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.44845,
    "c": 0.10793,
    "h": 250.7
  },
  "luminance": 0.09031
}

Semantic roles & 50–950 ramp

primary
#1D578E
secondary
#BD824A
accent
#923FE9
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#080B10
muted
#7A7C7F

Preview Lab

Preview with #1D578E

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

Preview Lab → · Contrast checker → · Palette generator →

#1D578E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva