#1D3D8D#1D3D8D

#1D3D8D is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.138 H 264.3°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D8D
RGB	rgb(29, 61, 141)
HSL	hsl(223, 66%, 33%)
HSV	hsv(223, 79%, 55%)
CMYK	cmyk(79.4%, 56.7%, 0%, 44.7%)
CIE-LAB	lab(28.17, 19.01, -47.75)
CIE-LCH	lch(28.17, 51.40, 291.71°)
OKLab	oklab(38.76% -0.0136 -0.1377)
OKLCH	oklch(38.76% 0.138 264.3)
XYZ	xyz(6.9814, 5.5210, 25.8918)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D8D #8D6D1D

analogous

#1D758D #1D3D8D #351D8D

triadic

#1D3D8D #8D1D3D #3D8D1D

tetradic

#1D3D8D #8D1D75 #8D6D1D #1D8D35

square

#1D3D8D #8D1D75 #8D6D1D #1D8D35

split-complementary

#1D3D8D #8D351D #758D1D

monochromatic

#081127 #13275A #1D3D8D #2753C0 #4B73DA

Accessibility & contrast

On white

9.98

#1D3D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1D3D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D8D

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D8D	#FFFFFF	#000000	##FFFFFF
##1D3D8D	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d3d8d;
/* rgb */ color: rgb(29, 61, 141);
/* oklch */ color: oklch(38.8% 0.138 264.3);

Tailwind

colors: {
  custom: {
    50: '#6c72af',
    500: '#1d3d8d',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d8d;
$custom-light: #6c72af;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d8d",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 141
  },
  "hsl": {
    "h": 222.857,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38762,
    "c": 0.13842,
    "h": 264.3
  },
  "luminance": 0.05522
}

Semantic roles & 50–950 ramp

primary

#1D3D8D

secondary

#BC9B4A

accent

#B83FE9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D3D8D

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

Preview Lab → · Contrast checker → · Palette generator →