#1D3363#1D3363

#1D3363 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.1% C 0.089 H 263.7°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#1D3363
RGB	rgb(29, 51, 99)
HSL	hsl(221, 55%, 25%)
HSV	hsv(221, 71%, 39%)
CMYK	cmyk(70.7%, 48.5%, 0%, 61.2%)
CIE-LAB	lab(22.05, 9.06, -31.01)
CIE-LCH	lch(22.05, 32.31, 286.29°)
OKLab	oklab(33.11% -0.0098 -0.0887)
OKLCH	oklch(33.11% 0.089 263.7)
XYZ	xyz(3.9419, 3.5293, 12.2755)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3363 #634D1D

analogous

#1D5663 #1D3363 #2A1D63

triadic

#1D3363 #631D33 #33631D

tetradic

#1D3363 #631D56 #634D1D #1D632A

square

#1D3363 #631D56 #634D1D #1D632A

split-complementary

#1D3363 #632A1D #56631D

monochromatic

#070C18 #0F1B34 #1D3363 #2B4B92 #3964C2

Accessibility & contrast

On white

12.31

#1D3363 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1D3363 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3363

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3363	#FFFFFF	#000000	##FFFFFF
##1D3363	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3865

Deuteranopia (green-blind)

#0E3262

Tritanopia (blue-blind)

#003E46

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1d3363;
/* rgb */ color: rgb(29, 51, 99);
/* oklch */ color: oklch(33.1% 0.089 263.7);

Tailwind

colors: {
  custom: {
    50: '#626a90',
    500: '#1d3363',
    950: '#000000',
  },
}

SCSS

$custom: #1d3363;
$custom-light: #626a90;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3363",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 99
  },
  "hsl": {
    "h": 221.143,
    "s": 54.688,
    "l": 25.098
  },
  "oklch": {
    "l": 0.33108,
    "c": 0.08923,
    "h": 263.7
  },
  "luminance": 0.0353
}

Semantic roles & 50–950 ramp

primary

#1D3363

secondary

#987E44

accent

#AF4ADE

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05060C

muted

#7A7A7D

Preview Lab

Preview with #1D3363

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

Preview Lab → · Contrast checker → · Palette generator →