#1B218D#1B218D

#1B218D is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.5% C 0.172 H 270.2°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#1B218D
RGB	rgb(27, 33, 141)
HSL	hsl(237, 68%, 33%)
HSV	hsv(237, 81%, 55%)
CMYK	cmyk(80.9%, 76.6%, 0%, 44.7%)
CIE-LAB	lab(20.99, 37.42, -59.52)
CIE-LCH	lch(20.99, 70.31, 302.16°)
OKLab	oklab(33.47% 0.0006 -0.1724)
OKLCH	oklch(33.47% 0.172 270.2)
XYZ	xyz(5.8019, 3.2432, 25.5143)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B218D #8D871B

analogous

#1B5A8D #1B218D #4E1B8D

triadic

#1B218D #8D1B21 #218D1B

tetradic

#1B218D #8D1B5A #8D871B #1B8D4E

square

#1B218D #8D1B5A #8D871B #1B8D4E

split-complementary

#1B218D #8D4E1B #5A8D1B

monochromatic

#070926 #11155A #1B218D #252DC0 #474FDC

Accessibility & contrast

On white

12.74

#1B218D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1B218D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B218D

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B218D	#FFFFFF	#000000	##FFFFFF
##1B218D	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003890

Deuteranopia (green-blind)

#002D8B

Tritanopia (blue-blind)

#004155

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b218d;
/* rgb */ color: rgb(27, 33, 141);
/* oklch */ color: oklch(33.5% 0.172 270.2);

Tailwind

colors: {
  custom: {
    50: '#6e5eb0',
    500: '#1b218d',
    950: '#000000',
  },
}

SCSS

$custom: #1b218d;
$custom-light: #6e5eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b218d",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 141
  },
  "hsl": {
    "h": 236.842,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33466,
    "c": 0.1724,
    "h": 270.2
  },
  "luminance": 0.03244
}

Semantic roles & 50–950 ramp

primary

#1B218D

secondary

#BDB746

accent

#E23DEB

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080411

muted

#7B7980

Preview Lab

Preview with #1B218D

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

Preview Lab → · Contrast checker → · Palette generator →