#1D43AD#1D43AD

#1D43AD is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.8% C 0.175 H 264.7°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1D43AD
RGB	rgb(29, 67, 173)
HSL	hsl(224, 71%, 40%)
HSV	hsv(224, 83%, 68%)
CMYK	cmyk(83.2%, 61.3%, 0%, 32.2%)
CIE-LAB	lab(32.46, 27.58, -60.17)
CIE-LCH	lch(32.46, 66.19, 294.63°)
OKLab	oklab(42.81% -0.0161 -0.1741)
OKLCH	oklch(42.81% 0.175 264.7)
XYZ	xyz(10.0540, 7.2914, 40.4046)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D43AD #AD871D

analogous

#1D8BAD #1D43AD #3F1DAD

triadic

#1D43AD #AD1D43 #43AD1D

tetradic

#1D43AD #AD1D8B #AD871D #1DAD3F

square

#1D43AD #AD1D8B #AD871D #1DAD3F

split-complementary

#1D43AD #AD3F1D #8BAD1D

monochromatic

#0B1A44 #142F79 #1D43AD #2C5ADC #6083E4

Accessibility & contrast

On white

8.54

#1D43AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1D43AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D43AD

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D43AD	#FFFFFF	#000000	##FFFFFF
##1D43AD	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B0

Deuteranopia (green-blind)

#0046AB

Tritanopia (blue-blind)

#005E71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d43ad;
/* rgb */ color: rgb(29, 67, 173);
/* oklch */ color: oklch(42.8% 0.175 264.7);

Tailwind

colors: {
  custom: {
    50: '#7476c6',
    500: '#1d43ad',
    950: '#000000',
  },
}

SCSS

$custom: #1d43ad;
$custom-light: #7476c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d43ad",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 173
  },
  "hsl": {
    "h": 224.167,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.42805,
    "c": 0.17484,
    "h": 264.7
  },
  "luminance": 0.07293
}

Semantic roles & 50–950 ramp

primary

#1D43AD

secondary

#C9AC5D

accent

#BE3AEE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1D43AD

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

Preview Lab → · Contrast checker → · Palette generator →