#1D3E79#1D3E79

#1D3E79 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.4% C 0.108 H 261.0°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E79
RGB	rgb(29, 62, 121)
HSL	hsl(218, 61%, 29%)
HSV	hsv(218, 76%, 47%)
CMYK	cmyk(76%, 48.8%, 0%, 52.5%)
CIE-LAB	lab(26.98, 10.22, -37.20)
CIE-LCH	lch(26.98, 38.58, 285.36°)
OKLab	oklab(37.38% -0.0169 -0.1067)
OKLCH	oklch(37.38% 0.108 261)
XYZ	xyz(5.6793, 5.0863, 18.7679)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E79 #79581D

analogous

#1D6C79 #1D3E79 #2A1D79

triadic

#1D3E79 #791D3E #3E791D

tetradic

#1D3E79 #791D6C #79581D #1D792A

square

#1D3E79 #791D6C #79581D #1D792A

split-complementary

#1D3E79 #792A1D #6C791D

monochromatic

#060D19 #112548 #1D3E79 #2957AA #3F74D1

Accessibility & contrast

On white

10.41

#1D3E79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1D3E79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E79

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E79	#FFFFFF	#000000	##FFFFFF
##1D3E79	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F447B

Deuteranopia (green-blind)

#083C78

Tritanopia (blue-blind)

#004C55

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d3e79;
/* rgb */ color: rgb(29, 62, 121);
/* oklch */ color: oklch(37.4% 0.108 261.0);

Tailwind

colors: {
  custom: {
    50: '#6772a0',
    500: '#1d3e79',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e79;
$custom-light: #6772a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e79",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 121
  },
  "hsl": {
    "h": 218.478,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37382,
    "c": 0.10803,
    "h": 261
  },
  "luminance": 0.05087
}

Semantic roles & 50–950 ramp

primary

#1D3E79

secondary

#AD8845

accent

#AB43E4

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080F

muted

#7A7B7E

Preview Lab

Preview with #1D3E79

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

Preview Lab → · Contrast checker → · Palette generator →