#1D4488#1D4488

#1D4488 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 39.9% C 0.122 H 260.6°. Best body text is #FFFFFF at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#1D4488
RGB	rgb(29, 68, 136)
HSL	hsl(218, 65%, 32%)
HSV	hsv(218, 79%, 53%)
CMYK	cmyk(78.7%, 50%, 0%, 46.7%)
CIE-LAB	lab(29.84, 12.15, -41.96)
CIE-LCH	lch(29.84, 43.68, 286.14°)
OKLab	oklab(39.92% -0.0199 -0.1206)
OKLCH	oklch(39.92% 0.122 260.6)
XYZ	xyz(7.0161, 6.1722, 24.1094)
Luminance	0.0617 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4488 #88611D

analogous

#1D7988 #1D4488 #2C1D88

triadic

#1D4488 #881D44 #44881D

tetradic

#1D4488 #881D79 #88611D #1D882C

square

#1D4488 #881D79 #88611D #1D882C

split-complementary

#1D4488 #882C1D #79881D

monochromatic

#071223 #122B56 #1D4488 #285DBA #487CD8

Accessibility & contrast

On white

9.40

#1D4488 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1D4488 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4488

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4488	#FFFFFF	#000000	##FFFFFF
##1D4488	1.00	9.40	2.23	9.40
#FFFFFF	9.40	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4B8B

Deuteranopia (green-blind)

#004287

Tritanopia (blue-blind)

#00545F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d4488;
/* rgb */ color: rgb(29, 68, 136);
/* oklch */ color: oklch(39.9% 0.122 260.6);

Tailwind

colors: {
  custom: {
    50: '#6a77ab',
    500: '#1d4488',
    950: '#000000',
  },
}

SCSS

$custom: #1d4488;
$custom-light: #6a77ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4488",
  "rgb": {
    "r": 29,
    "g": 68,
    "b": 136
  },
  "hsl": {
    "h": 218.131,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.39916,
    "c": 0.12218,
    "h": 260.6
  },
  "luminance": 0.06173
}

Semantic roles & 50–950 ramp

primary

#1D4488

secondary

#BA9047

accent

#AB40E8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1D4488

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

Preview Lab → · Contrast checker → · Palette generator →