#1D3690#1D3690

#1D3690 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.6% C 0.152 H 266.7°. Best body text is #FFFFFF at 10.59:1 contrast (WCAG AA passes).

Color values

HEX	#1D3690
RGB	rgb(29, 54, 144)
HSL	hsl(227, 66%, 34%)
HSV	hsv(227, 80%, 56%)
CMYK	cmyk(79.9%, 62.5%, 0%, 43.5%)
CIE-LAB	lab(26.48, 25.04, -52.35)
CIE-LCH	lch(26.48, 58.03, 295.56°)
OKLab	oklab(37.58% -0.0086 -0.1514)
OKLCH	oklch(37.58% 0.152 266.7)
XYZ	xyz(6.8581, 4.9124, 26.9669)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3690 #90771D

analogous

#1D7090 #1D3690 #3E1D90

triadic

#1D3690 #901D36 #36901D

tetradic

#1D3690 #901D70 #90771D #1D903E

square

#1D3690 #901D70 #90771D #1D903E

split-complementary

#1D3690 #903E1D #70901D

monochromatic

#08102A #13235D #1D3690 #2749C3 #4C6BDB

Accessibility & contrast

On white

10.59

#1D3690 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1D3690 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3690

10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3690	#FFFFFF	#000000	##FFFFFF
##1D3690	1.00	10.59	1.98	10.59
#FFFFFF	10.59	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004493

Deuteranopia (green-blind)

#00398E

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1d3690;
/* rgb */ color: rgb(29, 54, 144);
/* oklch */ color: oklch(37.6% 0.152 266.7);

Tailwind

colors: {
  custom: {
    50: '#6d6cb1',
    500: '#1d3690',
    950: '#000000',
  },
}

SCSS

$custom: #1d3690;
$custom-light: #6d6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3690",
  "rgb": {
    "r": 29,
    "g": 54,
    "b": 144
  },
  "hsl": {
    "h": 226.957,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.37577,
    "c": 0.1516,
    "h": 266.7
  },
  "luminance": 0.04913
}

Semantic roles & 50–950 ramp

primary

#1D3690

secondary

#BDA54B

accent

#C43EE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1D3690

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

Preview Lab → · Contrast checker → · Palette generator →