#1B218C#1B218C

#1B218C is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.4% C 0.171 H 270.2°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#1B218C
RGB	rgb(27, 33, 140)
HSL	hsl(237, 68%, 33%)
HSV	hsv(237, 81%, 55%)
CMYK	cmyk(80.7%, 76.4%, 0%, 45.1%)
CIE-LAB	lab(20.88, 37.07, -59.09)
CIE-LCH	lch(20.88, 69.75, 302.10°)
OKLab	oklab(33.35% 0.0007 -0.1711)
OKLCH	oklch(33.35% 0.171 270.2)
XYZ	xyz(5.7279, 3.2135, 25.1243)
Luminance	0.0321 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B218C #8C861B

analogous

#1B5A8C #1B218C #4D1B8C

triadic

#1B218C #8C1B21 #218C1B

tetradic

#1B218C #8C1B5A #8C861B #1B8C4D

square

#1B218C #8C1B5A #8C861B #1B8C4D

split-complementary

#1B218C #8C4D1B #5A8C1B

monochromatic

#070925 #111559 #1B218C #252DBF #464EDB

Accessibility & contrast

On white

12.78

#1B218C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1B218C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B218C

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B218C	#FFFFFF	#000000	##FFFFFF
##1B218C	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388F

Deuteranopia (green-blind)

#002D8A

Tritanopia (blue-blind)

#004055

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b218c;
/* rgb */ color: rgb(27, 33, 140);
/* oklch */ color: oklch(33.4% 0.171 270.2);

Tailwind

colors: {
  custom: {
    50: '#6d5daf',
    500: '#1b218c',
    950: '#000000',
  },
}

SCSS

$custom: #1b218c;
$custom-light: #6d5daf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b218c",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 140
  },
  "hsl": {
    "h": 236.814,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33352,
    "c": 0.17113,
    "h": 270.2
  },
  "luminance": 0.03214
}

Semantic roles & 50–950 ramp

primary

#1B218C

secondary

#BDB746

accent

#E13DEB

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B218C

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

Preview Lab → · Contrast checker → · Palette generator →