#1D3489#1D3489

#1D3489 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.5% C 0.144 H 267.1°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#1D3489
RGB	rgb(29, 52, 137)
HSL	hsl(227, 65%, 33%)
HSV	hsv(227, 79%, 54%)
CMYK	cmyk(78.8%, 62%, 0%, 46.3%)
CIE-LAB	lab(25.33, 23.66, -49.90)
CIE-LCH	lch(25.33, 55.22, 295.36°)
OKLab	oklab(36.53% -0.0073 -0.1442)
OKLCH	oklch(36.53% 0.144 267.1)
XYZ	xyz(6.2485, 4.5226, 24.2057)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3489 #89721D

analogous

#1D6A89 #1D3489 #3C1D89

triadic

#1D3489 #891D34 #34891D

tetradic

#1D3489 #891D6A #89721D #1D893C

square

#1D3489 #891D6A #89721D #1D893C

split-complementary

#1D3489 #893C1D #6A891D

monochromatic

#080E24 #122156 #1D3489 #2847BC #4867D8

Accessibility & contrast

On white

11.03

#1D3489 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1D3489 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3489

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3489	#FFFFFF	#000000	##FFFFFF
##1D3489	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418C

Deuteranopia (green-blind)

#003787

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d3489;
/* rgb */ color: rgb(29, 52, 137);
/* oklch */ color: oklch(36.5% 0.144 267.1);

Tailwind

colors: {
  custom: {
    50: '#6b6bac',
    500: '#1d3489',
    950: '#000000',
  },
}

SCSS

$custom: #1d3489;
$custom-light: #6b6bac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3489",
  "rgb": {
    "r": 29,
    "g": 52,
    "b": 137
  },
  "hsl": {
    "h": 227.222,
    "s": 65.06,
    "l": 32.549
  },
  "oklch": {
    "l": 0.36528,
    "c": 0.14439,
    "h": 267.1
  },
  "luminance": 0.04523
}

Semantic roles & 50–950 ramp

primary

#1D3489

secondary

#BAA247

accent

#C440E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1D3489

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

Preview Lab → · Contrast checker → · Palette generator →