#1D1B8B#1D1B8B

#1D1B8B is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.5% C 0.175 H 271.8°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#1D1B8B
RGB	rgb(29, 27, 139)
HSL	hsl(241, 67%, 33%)
HSV	hsv(241, 81%, 55%)
CMYK	cmyk(79.1%, 80.6%, 0%, 45.5%)
CIE-LAB	lab(19.67, 40.30, -60.45)
CIE-LCH	lch(19.67, 72.65, 303.69°)
OKLab	oklab(32.5% 0.0054 -0.175)
OKLCH	oklch(32.5% 0.175 271.8)
XYZ	xyz(5.5573, 2.9085, 24.6896)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1B8B #898B1B

analogous

#1B518B #1D1B8B #551B8B

triadic

#1D1B8B #8B1D1B #1B8B1D

tetradic

#1D1B8B #8B1B51 #898B1B #1B8B55

square

#1D1B8B #8B1B51 #898B1B #1B8B55

split-complementary

#1D1B8B #8B551B #518B1B

monochromatic

#080725 #121158 #1D1B8B #2825BE #4845DB

Accessibility & contrast

On white

13.28

#1D1B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1D1B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1B8B

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1B8B	#FFFFFF	#000000	##FFFFFF
##1D1B8B	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358E

Deuteranopia (green-blind)

#002A89

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1d1b8b;
/* rgb */ color: rgb(29, 27, 139);
/* oklch */ color: oklch(32.5% 0.175 271.8);

Tailwind

colors: {
  custom: {
    50: '#6e5aae',
    500: '#1d1b8b',
    950: '#000000',
  },
}

SCSS

$custom: #1d1b8b;
$custom-light: #6e5aae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1b8b",
  "rgb": {
    "r": 29,
    "g": 27,
    "b": 139
  },
  "hsl": {
    "h": 241.071,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32498,
    "c": 0.17507,
    "h": 271.8
  },
  "luminance": 0.02909
}

Semantic roles & 50–950 ramp

primary

#1D1B8B

secondary

#BABC45

accent

#EA3DE7

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #1D1B8B

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

Preview Lab → · Contrast checker → · Palette generator →