#1D3A7E#1D3A7E

#1D3A7E is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.121 H 264.0°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A7E
RGB	rgb(29, 58, 126)
HSL	hsl(222, 63%, 30%)
HSV	hsv(222, 77%, 49%)
CMYK	cmyk(77%, 54%, 0%, 50.6%)
CIE-LAB	lab(26.14, 15.05, -41.71)
CIE-LCH	lch(26.14, 44.34, 289.84°)
OKLab	oklab(36.85% -0.0126 -0.12)
OKLCH	oklch(36.85% 0.121 264)
XYZ	xyz(5.7843, 4.7930, 20.3549)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A7E #7E611D

analogous

#1D6A7E #1D3A7E #301D7E

triadic

#1D3A7E #7E1D3A #3A7E1D

tetradic

#1D3A7E #7E1D6A #7E611D #1D7E30

square

#1D3A7E #7E1D6A #7E611D #1D7E30

split-complementary

#1D3A7E #7E301D #6A7E1D

monochromatic

#060C1B #12234C #1D3A7E #2851B0 #426DD3

Accessibility & contrast

On white

10.72

#1D3A7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1D3A7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A7E

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A7E	#FFFFFF	#000000	##FFFFFF
##1D3A7E	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4380

Deuteranopia (green-blind)

#003A7D

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d3a7e;
/* rgb */ color: rgb(29, 58, 126);
/* oklch */ color: oklch(36.9% 0.121 264.0);

Tailwind

colors: {
  custom: {
    50: '#686fa4',
    500: '#1d3a7e',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a7e;
$custom-light: #686fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a7e",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 126
  },
  "hsl": {
    "h": 222.062,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36854,
    "c": 0.12069,
    "h": 264
  },
  "luminance": 0.04794
}

Semantic roles & 50–950 ramp

primary

#1D3A7E

secondary

#B19145

accent

#B542E6

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D3A7E

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

Preview Lab → · Contrast checker → · Palette generator →