#1D3C8D#1D3C8D

#1D3C8D is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.140 H 264.7°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#1D3C8D
RGB	rgb(29, 60, 141)
HSL	hsl(223, 66%, 33%)
HSV	hsv(223, 79%, 55%)
CMYK	cmyk(79.4%, 57.4%, 0%, 44.7%)
CIE-LAB	lab(27.89, 19.70, -48.21)
CIE-LCH	lch(27.89, 52.08, 292.23°)
OKLab	oklab(38.55% -0.0129 -0.1391)
OKLCH	oklch(38.55% 0.14 264.7)
XYZ	xyz(6.9286, 5.4152, 25.8742)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3C8D #8D6E1D

analogous

#1D748D #1D3C8D #361D8D

triadic

#1D3C8D #8D1D3C #3C8D1D

tetradic

#1D3C8D #8D1D74 #8D6E1D #1D8D36

square

#1D3C8D #8D1D74 #8D6E1D #1D8D36

split-complementary

#1D3C8D #8D361D #748D1D

monochromatic

#081127 #13265A #1D3C8D #2752C0 #4B72DA

Accessibility & contrast

On white

10.08

#1D3C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1D3C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3C8D

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3C8D	#FFFFFF	#000000	##FFFFFF
##1D3C8D	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#003D8B

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d3c8d;
/* rgb */ color: rgb(29, 60, 141);
/* oklch */ color: oklch(38.5% 0.140 264.7);

Tailwind

colors: {
  custom: {
    50: '#6c71af',
    500: '#1d3c8d',
    950: '#000000',
  },
}

SCSS

$custom: #1d3c8d;
$custom-light: #6c71af;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3c8d",
  "rgb": {
    "r": 29,
    "g": 60,
    "b": 141
  },
  "hsl": {
    "h": 223.393,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38548,
    "c": 0.13972,
    "h": 264.7
  },
  "luminance": 0.05416
}

Semantic roles & 50–950 ramp

primary

#1D3C8D

secondary

#BC9C4A

accent

#BA3FE9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D3C8D

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

Preview Lab → · Contrast checker → · Palette generator →