#1D3E77#1D3E77

#1D3E77 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.2% C 0.105 H 260.5°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E77
RGB	rgb(29, 62, 119)
HSL	hsl(218, 61%, 29%)
HSV	hsv(218, 76%, 47%)
CMYK	cmyk(75.6%, 47.9%, 0%, 53.3%)
CIE-LAB	lab(26.84, 9.41, -36.16)
CIE-LCH	lch(26.84, 37.36, 284.58°)
OKLab	oklab(37.23% -0.0173 -0.1036)
OKLCH	oklch(37.23% 0.105 260.5)
XYZ	xyz(5.5579, 5.0378, 18.1287)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E77 #77561D

analogous

#1D6B77 #1D3E77 #291D77

triadic

#1D3E77 #771D3E #3E771D

tetradic

#1D3E77 #771D6B #77561D #1D7729

square

#1D3E77 #771D6B #77561D #1D7729

split-complementary

#1D3E77 #77291D #6B771D

monochromatic

#060D19 #112446 #1D3E77 #2958A8 #3E74D0

Accessibility & contrast

On white

10.46

#1D3E77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1D3E77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E77

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E77	#FFFFFF	#000000	##FFFFFF
##1D3E77	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204479

Deuteranopia (green-blind)

#0D3C76

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1d3e77;
/* rgb */ color: rgb(29, 62, 119);
/* oklch */ color: oklch(37.2% 0.105 260.5);

Tailwind

colors: {
  custom: {
    50: '#66729f',
    500: '#1d3e77',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e77;
$custom-light: #66729f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e77",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 119
  },
  "hsl": {
    "h": 218,
    "s": 60.811,
    "l": 29.02
  },
  "oklch": {
    "l": 0.37233,
    "c": 0.10506,
    "h": 260.5
  },
  "luminance": 0.05038
}

Semantic roles & 50–950 ramp

primary

#1D3E77

secondary

#AB8645

accent

#A944E4

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1D3E77

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

Preview Lab → · Contrast checker → · Palette generator →