#1D47AD#1D47AD

#1D47AD is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.6% C 0.170 H 263.8°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#1D47AD
RGB	rgb(29, 71, 173)
HSL	hsl(223, 71%, 40%)
HSV	hsv(223, 83%, 68%)
CMYK	cmyk(83.2%, 59%, 0%, 32.2%)
CIE-LAB	lab(33.53, 24.90, -58.42)
CIE-LCH	lch(33.53, 63.51, 293.08°)
OKLab	oklab(43.6% -0.0184 -0.1689)
OKLCH	oklch(43.6% 0.17 263.8)
XYZ	xyz(10.3001, 7.7836, 40.4866)
Luminance	0.0779 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D47AD #AD831D

analogous

#1D8FAD #1D47AD #3B1DAD

triadic

#1D47AD #AD1D47 #47AD1D

tetradic

#1D47AD #AD1D8F #AD831D #1DAD3B

square

#1D47AD #AD1D8F #AD831D #1DAD3B

split-complementary

#1D47AD #AD3B1D #8FAD1D

monochromatic

#0B1C44 #143179 #1D47AD #2C5FDC #6087E4

Accessibility & contrast

On white

8.21

#1D47AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1D47AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D47AD

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D47AD	#FFFFFF	#000000	##FFFFFF
##1D47AD	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B0

Deuteranopia (green-blind)

#0048AB

Tritanopia (blue-blind)

#006173

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d47ad;
/* rgb */ color: rgb(29, 71, 173);
/* oklch */ color: oklch(43.6% 0.170 263.8);

Tailwind

colors: {
  custom: {
    50: '#7379c6',
    500: '#1d47ad',
    950: '#000000',
  },
}

SCSS

$custom: #1d47ad;
$custom-light: #7379c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d47ad",
  "rgb": {
    "r": 29,
    "g": 71,
    "b": 173
  },
  "hsl": {
    "h": 222.5,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.43603,
    "c": 0.16992,
    "h": 263.8
  },
  "luminance": 0.07785
}

Semantic roles & 50–950 ramp

primary

#1D47AD

secondary

#C9A95D

accent

#B93AEE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1D47AD

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

Preview Lab → · Contrast checker → · Palette generator →