#1D3471#1D3471

#1D3471 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.4% C 0.109 H 265.4°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX#1D3471
RGBrgb(29, 52, 113)
HSLhsl(224, 59%, 28%)
HSVhsv(224, 74%, 44%)
CMYKcmyk(74.3%, 54%, 0%, 55.7%)
CIE-LABlab(23.37, 14.02, -37.94)
CIE-LCHlch(23.37, 40.45, 290.28°)
OKLaboklab(34.44% -0.0087 -0.109)
OKLCHoklch(34.44% 0.109 265.4)
XYZxyz(4.7143, 3.9090, 16.1256)
Luminance0.0391 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D3471 #715A1D
analogous
#1D5E71 #1D3471 #301D71
triadic
#1D3471 #711D34 #34711D
tetradic
#1D3471 #711D5E #715A1D #1D7130
square
#1D3471 #711D5E #715A1D #1D7130
split-complementary
#1D3471 #71301D #5E711D
monochromatic
#060B18 #111E40 #1D3471 #294AA2 #3C63CD

Accessibility & contrast

On white

11.79
#1D3471 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.78
#1D3471 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3471
11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D3471#FFFFFF#000000##FFFFFF
##1D34711.0011.791.7811.79
#FFFFFF11.791.0021.001.00
#0000001.7821.001.0021.00
##FFFFFF11.791.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0D3C73
Deuteranopia (green-blind)
#003470
Tritanopia (blue-blind)
#00434D
Achromatopsia (no color)
#383838

Design tokens & code

CSS
--color: #1d3471;
/* rgb */ color: rgb(29, 52, 113);
/* oklch */ color: oklch(34.4% 0.109 265.4);
Tailwind
colors: {
  custom: {
    50: '#656b9a',
    500: '#1d3471',
    950: '#000000',
  },
}
SCSS
$custom: #1d3471;
$custom-light: #656b9a;
$custom-dark: #000000;
JSON
{
  "hex": "#1d3471",
  "rgb": {
    "r": 29,
    "g": 52,
    "b": 113
  },
  "hsl": {
    "h": 223.571,
    "s": 59.155,
    "l": 27.843
  },
  "oklch": {
    "l": 0.34439,
    "c": 0.1094,
    "h": 265.4
  },
  "luminance": 0.03909
}

Semantic roles & 50–950 ramp

primary
#1D3471
secondary
#A58B44
accent
#B745E2
background
#F6F6F9
surface
#EBEBF2
border
#C6C6CC
text
#06060E
muted
#7A7A7E

Preview Lab

Preview with #1D3471

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

Preview Lab → · Contrast checker → · Palette generator →

#1D3471 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva