#1D4AAD#1D4AAD

#1D4AAD is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.2% C 0.166 H 263.0°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#1D4AAD
RGB	rgb(29, 74, 173)
HSL	hsl(221, 71%, 40%)
HSV	hsv(221, 83%, 68%)
CMYK	cmyk(83.2%, 57.2%, 0%, 32.2%)
CIE-LAB	lab(34.34, 22.88, -57.10)
CIE-LCH	lch(34.34, 61.51, 291.84°)
OKLab	oklab(44.22% -0.0203 -0.165)
OKLCH	oklch(44.22% 0.166 263)
XYZ	xyz(10.4956, 8.1746, 40.5517)
Luminance	0.0818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4AAD #AD801D

analogous

#1D92AD #1D4AAD #381DAD

triadic

#1D4AAD #AD1D4A #4AAD1D

tetradic

#1D4AAD #AD1D92 #AD801D #1DAD38

square

#1D4AAD #AD1D92 #AD801D #1DAD38

split-complementary

#1D4AAD #AD381D #92AD1D

monochromatic

#0B1D44 #143479 #1D4AAD #2C63DC #6089E4

Accessibility & contrast

On white

7.97

#1D4AAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#1D4AAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4AAD

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4AAD	#FFFFFF	#000000	##FFFFFF
##1D4AAD	1.00	7.97	2.64	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B0

Deuteranopia (green-blind)

#004AAB

Tritanopia (blue-blind)

#006374

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1d4aad;
/* rgb */ color: rgb(29, 74, 173);
/* oklch */ color: oklch(44.2% 0.166 263.0);

Tailwind

colors: {
  custom: {
    50: '#737bc6',
    500: '#1d4aad',
    950: '#000000',
  },
}

SCSS

$custom: #1d4aad;
$custom-light: #737bc6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4aad",
  "rgb": {
    "r": 29,
    "g": 74,
    "b": 173
  },
  "hsl": {
    "h": 221.25,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.44216,
    "c": 0.16621,
    "h": 263
  },
  "luminance": 0.08176
}

Semantic roles & 50–950 ramp

primary

#1D4AAD

secondary

#C9A75D

accent

#B63AEE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1D4AAD

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

Preview Lab → · Contrast checker → · Palette generator →