#1D3572#1D3572

#1D3572 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.110 H 265.0°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#1D3572
RGB	rgb(29, 53, 114)
HSL	hsl(223, 59%, 28%)
HSV	hsv(223, 75%, 45%)
CMYK	cmyk(74.6%, 53.5%, 0%, 55.3%)
CIE-LAB	lab(23.74, 13.71, -37.97)
CIE-LCH	lch(23.74, 40.37, 289.86°)
OKLab	oklab(34.75% -0.0095 -0.1091)
OKLCH	oklch(34.75% 0.11 265)
XYZ	xyz(4.8160, 4.0218, 16.4388)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3572 #725A1D

analogous

#1D5F72 #1D3572 #2F1D72

triadic

#1D3572 #721D35 #35721D

tetradic

#1D3572 #721D5F #725A1D #1D722F

square

#1D3572 #721D5F #725A1D #1D722F

split-complementary

#1D3572 #722F1D #5F721D

monochromatic

#060B18 #111E41 #1D3572 #294CA3 #3C65CD

Accessibility & contrast

On white

11.64

#1D3572 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1D3572 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3572

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3572	#FFFFFF	#000000	##FFFFFF
##1D3572	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F3D74

Deuteranopia (green-blind)

#003571

Tritanopia (blue-blind)

#00444E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d3572;
/* rgb */ color: rgb(29, 53, 114);
/* oklch */ color: oklch(34.7% 0.110 265.0);

Tailwind

colors: {
  custom: {
    50: '#656b9b',
    500: '#1d3572',
    950: '#000000',
  },
}

SCSS

$custom: #1d3572;
$custom-light: #656b9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3572",
  "rgb": {
    "r": 29,
    "g": 53,
    "b": 114
  },
  "hsl": {
    "h": 223.059,
    "s": 59.441,
    "l": 28.039
  },
  "oklch": {
    "l": 0.34748,
    "c": 0.10954,
    "h": 265
  },
  "luminance": 0.04022
}

Semantic roles & 50–950 ramp

primary

#1D3572

secondary

#A68B45

accent

#B645E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D3572

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

Preview Lab → · Contrast checker → · Palette generator →