#1D4588#1D4588

#1D4588 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.1% C 0.121 H 260.1°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#1D4588
RGB	rgb(29, 69, 136)
HSL	hsl(218, 65%, 32%)
HSV	hsv(218, 79%, 53%)
CMYK	cmyk(78.7%, 49.3%, 0%, 46.7%)
CIE-LAB	lab(30.14, 11.46, -41.47)
CIE-LCH	lch(30.14, 43.03, 285.44°)
OKLab	oklab(40.15% -0.0207 -0.1191)
OKLCH	oklch(40.15% 0.121 260.1)
XYZ	xyz(7.0771, 6.2942, 24.1297)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4588 #88601D

analogous

#1D7B88 #1D4588 #2B1D88

triadic

#1D4588 #881D45 #45881D

tetradic

#1D4588 #881D7B #88601D #1D882B

square

#1D4588 #881D7B #88601D #1D882B

split-complementary

#1D4588 #882B1D #7B881D

monochromatic

#071223 #122B56 #1D4588 #285FBA #487DD8

Accessibility & contrast

On white

9.30

#1D4588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1D4588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4588

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4588	#FFFFFF	#000000	##FFFFFF
##1D4588	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204C8A

Deuteranopia (green-blind)

#004287

Tritanopia (blue-blind)

#005560

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1d4588;
/* rgb */ color: rgb(29, 69, 136);
/* oklch */ color: oklch(40.1% 0.121 260.1);

Tailwind

colors: {
  custom: {
    50: '#6a78ab',
    500: '#1d4588',
    950: '#000000',
  },
}

SCSS

$custom: #1d4588;
$custom-light: #6a78ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4588",
  "rgb": {
    "r": 29,
    "g": 69,
    "b": 136
  },
  "hsl": {
    "h": 217.57,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.40146,
    "c": 0.12091,
    "h": 260.1
  },
  "luminance": 0.06295
}

Semantic roles & 50–950 ramp

primary

#1D4588

secondary

#BA8F47

accent

#A940E8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1D4588

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

Preview Lab → · Contrast checker → · Palette generator →