#1D3D8E#1D3D8E

#1D3D8E is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.140 H 264.4°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D8E
RGB	rgb(29, 61, 142)
HSL	hsl(223, 66%, 34%)
HSV	hsv(223, 80%, 56%)
CMYK	cmyk(79.6%, 57%, 0%, 44.3%)
CIE-LAB	lab(28.25, 19.41, -48.24)
CIE-LCH	lch(28.25, 52.00, 291.92°)
OKLab	oklab(38.85% -0.0136 -0.1392)
OKLCH	oklch(38.85% 0.14 264.4)
XYZ	xyz(7.0562, 5.5509, 26.2855)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D8E #8E6E1D

analogous

#1D758E #1D3D8E #351D8E

triadic

#1D3D8E #8E1D3D #3D8E1D

tetradic

#1D3D8E #8E1D75 #8E6E1D #1D8E35

square

#1D3D8E #8E1D75 #8E6E1D #1D8E35

split-complementary

#1D3D8E #8E351D #758E1D

monochromatic

#081128 #13275B #1D3D8E #2753C1 #4B74DA

Accessibility & contrast

On white

9.95

#1D3D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1D3D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D8E

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D8E	#FFFFFF	#000000	##FFFFFF
##1D3D8E	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d3d8e;
/* rgb */ color: rgb(29, 61, 142);
/* oklch */ color: oklch(38.8% 0.140 264.4);

Tailwind

colors: {
  custom: {
    50: '#6c72b0',
    500: '#1d3d8e',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d8e;
$custom-light: #6c72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d8e",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 142
  },
  "hsl": {
    "h": 223.009,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38847,
    "c": 0.13984,
    "h": 264.4
  },
  "luminance": 0.05552
}

Semantic roles & 50–950 ramp

primary

#1D3D8E

secondary

#BD9C4A

accent

#B93FE9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D3D8E

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

Preview Lab → · Contrast checker → · Palette generator →