#1D1F8D#1D1F8D

#1D1F8D is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.3% C 0.174 H 271.2°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#1D1F8D
RGB	rgb(29, 31, 141)
HSL	hsl(239, 66%, 33%)
HSV	hsv(239, 79%, 55%)
CMYK	cmyk(79.4%, 78%, 0%, 44.7%)
CIE-LAB	lab(20.69, 38.74, -60.02)
CIE-LCH	lch(20.69, 71.44, 302.84°)
OKLab	oklab(33.28% 0.0035 -0.1738)
OKLCH	oklch(33.28% 0.174 271.2)
XYZ	xyz(5.8028, 3.1636, 25.4990)
Luminance	0.0316 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1F8D #8D8B1D

analogous

#1D578D #1D1F8D #531D8D

triadic

#1D1F8D #8D1D1F #1F8D1D

tetradic

#1D1F8D #8D1D57 #8D8B1D #1D8D53

square

#1D1F8D #8D1D57 #8D8B1D #1D8D53

split-complementary

#1D1F8D #8D531D #578D1D

monochromatic

#080927 #13145A #1D1F8D #272AC0 #4B4DDA

Accessibility & contrast

On white

12.86

#1D1F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1D1F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1F8D

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1F8D	#FFFFFF	#000000	##FFFFFF
##1D1F8D	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003790

Deuteranopia (green-blind)

#002C8B

Tritanopia (blue-blind)

#004055

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d1f8d;
/* rgb */ color: rgb(29, 31, 141);
/* oklch */ color: oklch(33.3% 0.174 271.2);

Tailwind

colors: {
  custom: {
    50: '#6e5cb0',
    500: '#1d1f8d',
    950: '#000000',
  },
}

SCSS

$custom: #1d1f8d;
$custom-light: #6e5cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1f8d",
  "rgb": {
    "r": 29,
    "g": 31,
    "b": 141
  },
  "hsl": {
    "h": 238.929,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33279,
    "c": 0.17383,
    "h": 271.2
  },
  "luminance": 0.03164
}

Semantic roles & 50–950 ramp

primary

#1D1F8D

secondary

#BCBA4A

accent

#E63FE9

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1D1F8D

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

Preview Lab → · Contrast checker → · Palette generator →