#1D3373#1D3373

#1D3373 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.4% C 0.114 H 266.2°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#1D3373
RGB	rgb(29, 51, 115)
HSL	hsl(225, 60%, 28%)
HSV	hsv(225, 75%, 45%)
CMYK	cmyk(74.8%, 55.7%, 0%, 54.9%)
CIE-LAB	lab(23.22, 15.54, -39.45)
CIE-LCH	lch(23.22, 42.40, 291.50°)
OKLab	oklab(34.38% -0.0076 -0.1135)
OKLCH	oklch(34.38% 0.114 266.2)
XYZ	xyz(4.7840, 3.8662, 16.7105)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3373 #735D1D

analogous

#1D5E73 #1D3373 #321D73

triadic

#1D3373 #731D33 #33731D

tetradic

#1D3373 #731D5E #735D1D #1D7332

square

#1D3373 #731D5E #735D1D #1D7332

split-complementary

#1D3373 #73321D #5E731D

monochromatic

#060B18 #111D42 #1D3373 #2949A4 #3C62CE

Accessibility & contrast

On white

11.84

#1D3373 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1D3373 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3373

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3373	#FFFFFF	#000000	##FFFFFF
##1D3373	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#053B75

Deuteranopia (green-blind)

#003472

Tritanopia (blue-blind)

#00424D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d3373;
/* rgb */ color: rgb(29, 51, 115);
/* oklch */ color: oklch(34.4% 0.114 266.2);

Tailwind

colors: {
  custom: {
    50: '#666a9c',
    500: '#1d3373',
    950: '#000000',
  },
}

SCSS

$custom: #1d3373;
$custom-light: #666a9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3373",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 115
  },
  "hsl": {
    "h": 224.651,
    "s": 59.722,
    "l": 28.235
  },
  "oklch": {
    "l": 0.34378,
    "c": 0.11377,
    "h": 266.2
  },
  "luminance": 0.03867
}

Semantic roles & 50–950 ramp

primary

#1D3373

secondary

#A78E45

accent

#BA45E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D3373

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

Preview Lab → · Contrast checker → · Palette generator →