#1D4388#1D4388

#1D4388 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.7% C 0.123 H 261.1°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#1D4388
RGB	rgb(29, 67, 136)
HSL	hsl(219, 65%, 32%)
HSV	hsv(219, 79%, 53%)
CMYK	cmyk(78.7%, 50.7%, 0%, 46.7%)
CIE-LAB	lab(29.54, 12.83, -42.44)
CIE-LCH	lch(29.54, 44.34, 286.83°)
OKLab	oklab(39.69% -0.019 -0.122)
OKLCH	oklch(39.69% 0.123 261.1)
XYZ	xyz(6.9562, 6.0523, 24.0894)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4388 #88621D

analogous

#1D7888 #1D4388 #2D1D88

triadic

#1D4388 #881D43 #43881D

tetradic

#1D4388 #881D78 #88621D #1D882D

square

#1D4388 #881D78 #88621D #1D882D

split-complementary

#1D4388 #882D1D #78881D

monochromatic

#071123 #122A56 #1D4388 #285CBA #487BD8

Accessibility & contrast

On white

9.50

#1D4388 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1D4388 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4388

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4388	#FFFFFF	#000000	##FFFFFF
##1D4388	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4B8B

Deuteranopia (green-blind)

#004187

Tritanopia (blue-blind)

#00545F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d4388;
/* rgb */ color: rgb(29, 67, 136);
/* oklch */ color: oklch(39.7% 0.123 261.1);

Tailwind

colors: {
  custom: {
    50: '#6a76ab',
    500: '#1d4388',
    950: '#000000',
  },
}

SCSS

$custom: #1d4388;
$custom-light: #6a76ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4388",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 136
  },
  "hsl": {
    "h": 218.692,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.39687,
    "c": 0.12347,
    "h": 261.1
  },
  "luminance": 0.06053
}

Semantic roles & 50–950 ramp

primary

#1D4388

secondary

#BA9147

accent

#AC40E8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1D4388

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

Preview Lab → · Contrast checker → · Palette generator →