#1D384B#1D384B

#1D384B is a dark, muted cyan. Relative luminance 0.036; OKLCH L 32.8% C 0.047 H 240.9°. Best body text is #FFFFFF at 12.21:1 contrast (WCAG AA passes).

Color values

HEX#1D384B
RGBrgb(29, 56, 75)
HSLhsl(205, 44%, 20%)
HSVhsv(205, 61%, 29%)
CMYKcmyk(61.3%, 25.3%, 0%, 70.6%)
CIE-LABlab(22.29, -3.77, -14.78)
CIE-LCHlch(22.29, 15.26, 255.71°)
OKLaboklab(32.84% -0.023 -0.0413)
OKLCHoklch(32.84% 0.047 240.9)
XYZxyz(3.1904, 3.5973, 7.1815)
Luminance0.0360 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D384B #4B301D
analogous
#1D4B47 #1D384B #1D214B
triadic
#1D384B #4B1D38 #384B1D
tetradic
#1D384B #471D4B #4B301D #214B1D
square
#1D384B #471D4B #4B301D #214B1D
split-complementary
#1D384B #4B1D21 #4B471D
monochromatic
#091016 #0C171F #1D384B #2E5977 #3F7AA3

Accessibility & contrast

On white

12.21
#1D384B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.72
#1D384B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D384B
12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D384B#FFFFFF#000000##FFFFFF
##1D384B1.0012.211.7212.21
#FFFFFF12.211.0021.001.00
#0000001.7221.001.0021.00
##FFFFFF12.211.0021.001.00

Color blindness preview

Protanopia (red-blind)
#30384C
Deuteranopia (green-blind)
#29334B
Tritanopia (blue-blind)
#003D3E
Achromatopsia (no color)
#353535

Design tokens & code

CSS
--color: #1d384b;
/* rgb */ color: rgb(29, 56, 75);
/* oklch */ color: oklch(32.8% 0.047 240.9);
Tailwind
colors: {
  custom: {
    50: '#5d6e7d',
    500: '#1d384b',
    950: '#000000',
  },
}
SCSS
$custom: #1d384b;
$custom-light: #5d6e7d;
$custom-dark: #000000;
JSON
{
  "hex": "#1d384b",
  "rgb": {
    "r": 29,
    "g": 56,
    "b": 75
  },
  "hsl": {
    "h": 204.783,
    "s": 44.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.32839,
    "c": 0.0473,
    "h": 240.9
  },
  "luminance": 0.03598
}

Semantic roles & 50–950 ramp

primary
#1D384B
secondary
#805D44
accent
#8954D4
background
#F5F6F7
surface
#E9EBEE
border
#C5C6C9
text
#040709
muted
#797A7B

Preview Lab

Preview with #1D384B

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

Preview Lab → · Contrast checker → · Palette generator →

#1D384B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva