#1D1B8A#1D1B8A

#1D1B8A is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.174 H 271.8°. Best body text is #FFFFFF at 13.32:1 contrast (WCAG AA passes).

Color values

HEX	#1D1B8A
RGB	rgb(29, 27, 138)
HSL	hsl(241, 67%, 32%)
HSV	hsv(241, 80%, 54%)
CMYK	cmyk(79%, 80.4%, 0%, 45.9%)
CIE-LAB	lab(19.55, 39.96, -60.02)
CIE-LCH	lch(19.55, 72.11, 303.65°)
OKLab	oklab(32.38% 0.0056 -0.1737)
OKLCH	oklch(32.38% 0.174 271.8)
XYZ	xyz(5.4845, 2.8795, 24.3066)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1B8A #888A1B

analogous

#1B518A #1D1B8A #551B8A

triadic

#1D1B8A #8A1D1B #1B8A1D

tetradic

#1D1B8A #8A1B51 #888A1B #1B8A55

square

#1D1B8A #8A1B51 #888A1B #1B8A55

split-complementary

#1D1B8A #8A551B #518A1B

monochromatic

#070724 #121157 #1D1B8A #2825BD #4845DB

Accessibility & contrast

On white

13.32

#1D1B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1D1B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1B8A

13.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1B8A	#FFFFFF	#000000	##FFFFFF
##1D1B8A	1.00	13.32	1.58	13.32
#FFFFFF	13.32	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358D

Deuteranopia (green-blind)

#002A88

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1d1b8a;
/* rgb */ color: rgb(29, 27, 138);
/* oklch */ color: oklch(32.4% 0.174 271.8);

Tailwind

colors: {
  custom: {
    50: '#6e5aad',
    500: '#1d1b8a',
    950: '#000000',
  },
}

SCSS

$custom: #1d1b8a;
$custom-light: #6e5aad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1b8a",
  "rgb": {
    "r": 29,
    "g": 27,
    "b": 138
  },
  "hsl": {
    "h": 241.081,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.32379,
    "c": 0.17384,
    "h": 271.8
  },
  "luminance": 0.0288
}

Semantic roles & 50–950 ramp

primary

#1D1B8A

secondary

#BABC45

accent

#EA3EE7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #1D1B8A

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

Preview Lab → · Contrast checker → · Palette generator →