#1D3E8E#1D3E8E

#1D3E8E is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.1% C 0.139 H 264.1°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E8E
RGB	rgb(29, 62, 142)
HSL	hsl(222, 66%, 34%)
HSV	hsv(222, 80%, 56%)
CMYK	cmyk(79.6%, 56.3%, 0%, 44.3%)
CIE-LAB	lab(28.53, 18.72, -47.78)
CIE-LCH	lch(28.53, 51.31, 291.39°)
OKLab	oklab(39.06% -0.0143 -0.1378)
OKLCH	oklch(39.06% 0.139 264.1)
XYZ	xyz(7.1101, 5.6586, 26.3034)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E8E #8E6D1D

analogous

#1D768E #1D3E8E #341D8E

triadic

#1D3E8E #8E1D3E #3E8E1D

tetradic

#1D3E8E #8E1D76 #8E6D1D #1D8E34

square

#1D3E8E #8E1D76 #8E6D1D #1D8E34

split-complementary

#1D3E8E #8E341D #768E1D

monochromatic

#081228 #13285B #1D3E8E #2754C1 #4B75DA

Accessibility & contrast

On white

9.85

#1D3E8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1D3E8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E8E

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E8E	#FFFFFF	#000000	##FFFFFF
##1D3E8E	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004991

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d3e8e;
/* rgb */ color: rgb(29, 62, 142);
/* oklch */ color: oklch(39.1% 0.139 264.1);

Tailwind

colors: {
  custom: {
    50: '#6c72b0',
    500: '#1d3e8e',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e8e;
$custom-light: #6c72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e8e",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 142
  },
  "hsl": {
    "h": 222.478,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39061,
    "c": 0.13854,
    "h": 264.1
  },
  "luminance": 0.05659
}

Semantic roles & 50–950 ramp

primary

#1D3E8E

secondary

#BD9B4A

accent

#B73FE9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1D3E8E

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

Preview Lab → · Contrast checker → · Palette generator →