#1D3166#1D3166

#1D3166 is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.9% C 0.097 H 265.8°. Best body text is #FFFFFF at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#1D3166
RGB	rgb(29, 49, 102)
HSL	hsl(224, 56%, 26%)
HSV	hsv(224, 72%, 40%)
CMYK	cmyk(71.6%, 52%, 0%, 60%)
CIE-LAB	lab(21.64, 11.71, -33.62)
CIE-LCH	lch(21.64, 35.60, 289.19°)
OKLab	oklab(32.86% -0.0071 -0.0964)
OKLCH	oklch(32.86% 0.097 265.8)
XYZ	xyz(4.0024, 3.4168, 13.0164)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3166 #66521D

analogous

#1D5566 #1D3166 #2E1D66

triadic

#1D3166 #661D31 #31661D

tetradic

#1D3166 #661D55 #66521D #1D662E

square

#1D3166 #661D55 #66521D #1D662E

split-complementary

#1D3166 #662E1D #55661D

monochromatic

#070B18 #0F1A36 #1D3166 #2B4896 #385FC5

Accessibility & contrast

On white

12.47

#1D3166 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1D3166 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3166

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3166	#FFFFFF	#000000	##FFFFFF
##1D3166	1.00	12.47	1.68	12.47
#FFFFFF	12.47	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#143768

Deuteranopia (green-blind)

#023165

Tritanopia (blue-blind)

#003D46

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1d3166;
/* rgb */ color: rgb(29, 49, 102);
/* oklch */ color: oklch(32.9% 0.097 265.8);

Tailwind

colors: {
  custom: {
    50: '#636892',
    500: '#1d3166',
    950: '#000000',
  },
}

SCSS

$custom: #1d3166;
$custom-light: #636892;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3166",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 102
  },
  "hsl": {
    "h": 223.562,
    "s": 55.725,
    "l": 25.686
  },
  "oklch": {
    "l": 0.32864,
    "c": 0.09666,
    "h": 265.8
  },
  "luminance": 0.03417
}

Semantic roles & 50–950 ramp

primary

#1D3166

secondary

#9B8344

accent

#B649DF

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1D3166

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

Preview Lab → · Contrast checker → · Palette generator →