#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
RGB	rgb(29, 52, 113)
HSL	hsl(224, 59%, 28%)
HSV	hsv(224, 74%, 44%)
CMYK	cmyk(74.3%, 54%, 0%, 55.7%)
CIE-LAB	lab(23.37, 14.02, -37.94)
CIE-LCH	lch(23.37, 40.45, 290.28°)
OKLab	oklab(34.44% -0.0087 -0.109)
OKLCH	oklch(34.44% 0.109 265.4)
XYZ	xyz(4.7143, 3.9090, 16.1256)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

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
##1D3471	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

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 →