#1D3569#1D3569

#1D3569 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.0% C 0.096 H 263.5°. Best body text is #FFFFFF at 11.90:1 contrast (WCAG AA passes).

Color values

HEX	#1D3569
RGB	rgb(29, 53, 105)
HSL	hsl(221, 57%, 26%)
HSV	hsv(221, 72%, 41%)
CMYK	cmyk(72.4%, 49.5%, 0%, 58.8%)
CIE-LAB	lab(23.09, 10.06, -33.24)
CIE-LCH	lch(23.09, 34.73, 286.84°)
OKLab	oklab(34.04% -0.0108 -0.0952)
OKLCH	oklch(34.04% 0.096 263.5)
XYZ	xyz(4.3287, 3.8269, 13.8724)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3569 #69511D

analogous

#1D5B69 #1D3569 #2B1D69

triadic

#1D3569 #691D35 #35691D

tetradic

#1D3569 #691D5B #69511D #1D692B

square

#1D3569 #691D5B #69511D #1D692B

split-complementary

#1D3569 #692B1D #5B691D

monochromatic

#070C18 #101D39 #1D3569 #2A4D99 #3866C8

Accessibility & contrast

On white

11.90

#1D3569 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1D3569 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3569

11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3569	#FFFFFF	#000000	##FFFFFF
##1D3569	1.00	11.90	1.77	11.90
#FFFFFF	11.90	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A3B6B

Deuteranopia (green-blind)

#0A3468

Tritanopia (blue-blind)

#00414A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d3569;
/* rgb */ color: rgb(29, 53, 105);
/* oklch */ color: oklch(34.0% 0.096 263.5);

Tailwind

colors: {
  custom: {
    50: '#636b94',
    500: '#1d3569',
    950: '#000000',
  },
}

SCSS

$custom: #1d3569;
$custom-light: #636b94;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3569",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 105
  },
  "hsl": {
    "h": 221.053,
    "s": 56.716,
    "l": 26.275
  },
  "oklch": {
    "l": 0.34041,
    "c": 0.09581,
    "h": 263.5
  },
  "luminance": 0.03827
}

Semantic roles & 50–950 ramp

primary

#1D3569

secondary

#9E8144

accent

#B048E0

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1D3569

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

Preview Lab → · Contrast checker → · Palette generator →