#1D3590#1D3590

#1D3590 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.4% C 0.153 H 267.0°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#1D3590
RGB	rgb(29, 53, 144)
HSL	hsl(227, 66%, 34%)
HSV	hsv(227, 80%, 56%)
CMYK	cmyk(79.9%, 63.2%, 0%, 43.5%)
CIE-LAB	lab(26.22, 25.72, -52.79)
CIE-LCH	lch(26.22, 58.72, 295.98°)
OKLab	oklab(37.38% -0.008 -0.1527)
OKLCH	oklch(37.38% 0.153 267)
XYZ	xyz(6.8121, 4.8203, 26.9515)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3590 #90781D

analogous

#1D6F90 #1D3590 #3F1D90

triadic

#1D3590 #901D35 #35901D

tetradic

#1D3590 #901D6F #90781D #1D903F

square

#1D3590 #901D6F #90781D #1D903F

split-complementary

#1D3590 #903F1D #6F901D

monochromatic

#08102A #13225D #1D3590 #2748C3 #4C6ADB

Accessibility & contrast

On white

10.69

#1D3590 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1D3590 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3590

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3590	#FFFFFF	#000000	##FFFFFF
##1D3590	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004493

Deuteranopia (green-blind)

#00398E

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d3590;
/* rgb */ color: rgb(29, 53, 144);
/* oklch */ color: oklch(37.4% 0.153 267.0);

Tailwind

colors: {
  custom: {
    50: '#6d6cb1',
    500: '#1d3590',
    950: '#000000',
  },
}

SCSS

$custom: #1d3590;
$custom-light: #6d6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3590",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 144
  },
  "hsl": {
    "h": 227.478,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.37379,
    "c": 0.15287,
    "h": 267
  },
  "luminance": 0.04821
}

Semantic roles & 50–950 ramp

primary

#1D3590

secondary

#BDA64B

accent

#C63EE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1D3590

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

Preview Lab → · Contrast checker → · Palette generator →