#1D3377#1D3377

#1D3377 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.120 H 266.5°. Best body text is #FFFFFF at 11.72:1 contrast (WCAG AA passes).

Color values

HEX	#1D3377
RGB	rgb(29, 51, 119)
HSL	hsl(225, 61%, 29%)
HSV	hsv(225, 76%, 47%)
CMYK	cmyk(75.6%, 57.1%, 0%, 53.3%)
CIE-LAB	lab(23.54, 17.16, -41.49)
CIE-LCH	lch(23.54, 44.90, 292.47°)
OKLab	oklab(34.72% -0.0072 -0.1195)
OKLCH	oklch(34.72% 0.12 266.5)
XYZ	xyz(5.0191, 3.9602, 17.9491)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3377 #77611D

analogous

#1D6077 #1D3377 #341D77

triadic

#1D3377 #771D33 #33771D

tetradic

#1D3377 #771D60 #77611D #1D7734

square

#1D3377 #771D60 #77611D #1D7734

split-complementary

#1D3377 #77341D #60771D

monochromatic

#060B19 #111E46 #1D3377 #2948A8 #3E62D0

Accessibility & contrast

On white

11.72

#1D3377 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1D3377 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3377

11.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3377	#FFFFFF	#000000	##FFFFFF
##1D3377	1.00	11.72	1.79	11.72
#FFFFFF	11.72	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C79

Deuteranopia (green-blind)

#003476

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d3377;
/* rgb */ color: rgb(29, 51, 119);
/* oklch */ color: oklch(34.7% 0.120 266.5);

Tailwind

colors: {
  custom: {
    50: '#676a9f',
    500: '#1d3377',
    950: '#000000',
  },
}

SCSS

$custom: #1d3377;
$custom-light: #676a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3377",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 119
  },
  "hsl": {
    "h": 225.333,
    "s": 60.811,
    "l": 29.02
  },
  "oklch": {
    "l": 0.34716,
    "c": 0.11973,
    "h": 266.5
  },
  "luminance": 0.03961
}

Semantic roles & 50–950 ramp

primary

#1D3377

secondary

#AB9245

accent

#BD44E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #1D3377

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

Preview Lab → · Contrast checker → · Palette generator →