#1D1F8A#1D1F8A

#1D1F8A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.9% C 0.170 H 271.4°. Best body text is #FFFFFF at 13.00:1 contrast (WCAG AA passes).

Color values

HEX	#1D1F8A
RGB	rgb(29, 31, 138)
HSL	hsl(239, 65%, 33%)
HSV	hsv(239, 79%, 54%)
CMYK	cmyk(79%, 77.5%, 0%, 45.9%)
CIE-LAB	lab(20.34, 37.70, -58.72)
CIE-LCH	lch(20.34, 69.78, 302.70°)
OKLab	oklab(32.93% 0.0041 -0.17)
OKLCH	oklch(32.93% 0.17 271.4)
XYZ	xyz(5.5826, 3.0756, 24.3393)
Luminance	0.0308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1F8A #8A881D

analogous

#1D558A #1D1F8A #511D8A

triadic

#1D1F8A #8A1D1F #1F8A1D

tetradic

#1D1F8A #8A1D55 #8A881D #1D8A51

square

#1D1F8A #8A1D55 #8A881D #1D8A51

split-complementary

#1D1F8A #8A511D #558A1D

monochromatic

#080825 #121457 #1D1F8A #282ABD #494BD9

Accessibility & contrast

On white

13.00

#1D1F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1D1F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1F8A

13.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1F8A	#FFFFFF	#000000	##FFFFFF
##1D1F8A	1.00	13.00	1.62	13.00
#FFFFFF	13.00	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	13.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002C88

Tritanopia (blue-blind)

#003F53

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1d1f8a;
/* rgb */ color: rgb(29, 31, 138);
/* oklch */ color: oklch(32.9% 0.170 271.4);

Tailwind

colors: {
  custom: {
    50: '#6e5cad',
    500: '#1d1f8a',
    950: '#000000',
  },
}

SCSS

$custom: #1d1f8a;
$custom-light: #6e5cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1f8a",
  "rgb": {
    "r": 29,
    "g": 31,
    "b": 138
  },
  "hsl": {
    "h": 238.899,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32935,
    "c": 0.17005,
    "h": 271.4
  },
  "luminance": 0.03076
}

Semantic roles & 50–950 ramp

primary

#1D1F8A

secondary

#BBB948

accent

#E540E8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1D1F8A

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

Preview Lab → · Contrast checker → · Palette generator →