#1D337D#1D337D

#1D337D is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.129 H 266.9°. Best body text is #FFFFFF at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#1D337D
RGB	rgb(29, 51, 125)
HSL	hsl(226, 62%, 30%)
HSV	hsv(226, 77%, 49%)
CMYK	cmyk(76.8%, 59.2%, 0%, 51%)
CIE-LAB	lab(24.03, 19.57, -44.50)
CIE-LCH	lch(24.03, 48.61, 293.74°)
OKLab	oklab(35.24% -0.0069 -0.1284)
OKLCH	oklch(35.24% 0.129 266.9)
XYZ	xyz(5.3909, 4.1090, 19.9071)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D337D #7D671D

analogous

#1D637D #1D337D #371D7D

triadic

#1D337D #7D1D33 #337D1D

tetradic

#1D337D #7D1D63 #7D671D #1D7D37

square

#1D337D #7D1D63 #7D671D #1D7D37

split-complementary

#1D337D #7D371D #637D1D

monochromatic

#060A1A #111F4B #1D337D #2947AF #4163D3

Accessibility & contrast

On white

11.53

#1D337D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1D337D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D337D

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D337D	#FFFFFF	#000000	##FFFFFF
##1D337D	1.00	11.53	1.82	11.53
#FFFFFF	11.53	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E80

Deuteranopia (green-blind)

#00357C

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d337d;
/* rgb */ color: rgb(29, 51, 125);
/* oklch */ color: oklch(35.2% 0.129 266.9);

Tailwind

colors: {
  custom: {
    50: '#686aa3',
    500: '#1d337d',
    950: '#000000',
  },
}

SCSS

$custom: #1d337d;
$custom-light: #686aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d337d",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 125
  },
  "hsl": {
    "h": 226.25,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.35238,
    "c": 0.12854,
    "h": 266.9
  },
  "luminance": 0.0411
}

Semantic roles & 50–950 ramp

primary

#1D337D

secondary

#B19845

accent

#C042E5

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D337D

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

Preview Lab → · Contrast checker → · Palette generator →