#1B218E#1B218E

#1B218E is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.6% C 0.174 H 270.1°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B218E
RGB	rgb(27, 33, 142)
HSL	hsl(237, 68%, 33%)
HSV	hsv(237, 81%, 56%)
CMYK	cmyk(81%, 76.8%, 0%, 44.3%)
CIE-LAB	lab(21.11, 37.77, -59.96)
CIE-LCH	lch(21.11, 70.87, 302.21°)
OKLab	oklab(33.58% 0.0004 -0.1737)
OKLCH	oklch(33.58% 0.174 270.1)
XYZ	xyz(5.8767, 3.2730, 25.9080)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B218E #8E881B

analogous

#1B5A8E #1B218E #4F1B8E

triadic

#1B218E #8E1B21 #218E1B

tetradic

#1B218E #8E1B5A #8E881B #1B8E4F

square

#1B218E #8E1B5A #8E881B #1B8E4F

split-complementary

#1B218E #8E4F1B #5A8E1B

monochromatic

#070927 #11155B #1B218E #252DC1 #474FDC

Accessibility & contrast

On white

12.69

#1B218E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1B218E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B218E

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B218E	#FFFFFF	#000000	##FFFFFF
##1B218E	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003891

Deuteranopia (green-blind)

#002D8C

Tritanopia (blue-blind)

#004156

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b218e;
/* rgb */ color: rgb(27, 33, 142);
/* oklch */ color: oklch(33.6% 0.174 270.1);

Tailwind

colors: {
  custom: {
    50: '#6e5eb0',
    500: '#1b218e',
    950: '#000000',
  },
}

SCSS

$custom: #1b218e;
$custom-light: #6e5eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b218e",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 142
  },
  "hsl": {
    "h": 236.87,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.3358,
    "c": 0.17367,
    "h": 270.1
  },
  "luminance": 0.03274
}

Semantic roles & 50–950 ramp

primary

#1B218E

secondary

#BEB847

accent

#E23DEB

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1B218E

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

Preview Lab → · Contrast checker → · Palette generator →