#1B1473#1B1473

#1B1473 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.6% C 0.152 H 274.2°. Best body text is #FFFFFF at 15.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B1473
RGB	rgb(27, 20, 115)
HSL	hsl(244, 70%, 26%)
HSV	hsv(244, 83%, 45%)
CMYK	cmyk(76.5%, 82.6%, 0%, 54.9%)
CIE-LAB	lab(15.33, 35.85, -52.38)
CIE-LCH	lch(15.33, 63.48, 304.39°)
OKLab	oklab(28.58% 0.0112 -0.1515)
OKLCH	oklch(28.58% 0.152 274.2)
XYZ	xyz(3.7956, 1.9707, 16.3967)
Luminance	0.0197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1473 #6C7314

analogous

#143D73 #1B1473 #4B1473

triadic

#1B1473 #731B14 #14731B

tetradic

#1B1473 #73143D #6C7314 #14734B

square

#1B1473 #73143D #6C7314 #14734B

split-complementary

#1B1473 #734B14 #3D7314

monochromatic

#06051A #0F0B3F #1B1473 #271DA7 #3528DA

Accessibility & contrast

On white

15.06

#1B1473 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B1473 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1473

15.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1473	#FFFFFF	#000000	##FFFFFF
##1B1473	1.00	15.06	1.39	15.06
#FFFFFF	15.06	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B76

Deuteranopia (green-blind)

#002271

Tritanopia (blue-blind)

#003144

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b1473;
/* rgb */ color: rgb(27, 20, 115);
/* oklch */ color: oklch(28.6% 0.152 274.2);

Tailwind

colors: {
  custom: {
    50: '#68549c',
    500: '#1b1473',
    950: '#000000',
  },
}

SCSS

$custom: #1b1473;
$custom-light: #68549c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1473",
  "rgb": {
    "r": 27,
    "g": 20,
    "b": 115
  },
  "hsl": {
    "h": 244.421,
    "s": 70.37,
    "l": 26.471
  },
  "oklch": {
    "l": 0.28583,
    "c": 0.15192,
    "h": 274.2
  },
  "luminance": 0.01971
}

Semantic roles & 50–950 ramp

primary

#1B1473

secondary

#A1A93A

accent

#ED3BE0

background

#F6F4F9

surface

#ECE8F2

border

#C7C4CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1B1473

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

Preview Lab → · Contrast checker → · Palette generator →