#1B1163#1B1163

#1B1163 is a dark, vivid blue. Relative luminance 0.015; OKLCH L 26.3% C 0.134 H 277.3°. Best body text is #FFFFFF at 16.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B1163
RGB	rgb(27, 17, 99)
HSL	hsl(247, 71%, 23%)
HSV	hsv(247, 83%, 39%)
CMYK	cmyk(72.7%, 82.8%, 0%, 61.2%)
CIE-LAB	lab(12.83, 32.06, -46.04)
CIE-LCH	lch(12.83, 56.10, 304.85°)
OKLab	oklab(26.26% 0.0171 -0.133)
OKLCH	oklch(26.26% 0.134 277.3)
XYZ	xyz(2.9038, 1.5345, 11.9451)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1163 #596311

analogous

#113063 #1B1163 #441163

triadic

#1B1163 #631B11 #11631B

tetradic

#1B1163 #631130 #596311 #116344

square

#1B1163 #631130 #596311 #116344

split-complementary

#1B1163 #634411 #306311

monochromatic

#07041A #0D082F #1B1163 #291A97 #3723CB

Accessibility & contrast

On white

16.07

#1B1163 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#1B1163 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1163

16.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1163	#FFFFFF	#000000	##FFFFFF
##1B1163	1.00	16.07	1.31	16.07
#FFFFFF	16.07	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002465

Deuteranopia (green-blind)

#001E62

Tritanopia (blue-blind)

#002A3A

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1b1163;
/* rgb */ color: rgb(27, 17, 99);
/* oklch */ color: oklch(26.3% 0.134 277.3);

Tailwind

colors: {
  custom: {
    50: '#645190',
    500: '#1b1163',
    950: '#000000',
  },
}

SCSS

$custom: #1b1163;
$custom-light: #645190;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1163",
  "rgb": {
    "r": 27,
    "g": 17,
    "b": 99
  },
  "hsl": {
    "h": 247.317,
    "s": 70.69,
    "l": 22.745
  },
  "oklch": {
    "l": 0.26264,
    "c": 0.13414,
    "h": 277.3
  },
  "luminance": 0.01535
}

Semantic roles & 50–950 ramp

primary

#1B1163

secondary

#8F9B34

accent

#ED3AD8

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06020D

muted

#7A787E

Preview Lab

Preview with #1B1163

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

Preview Lab → · Contrast checker → · Palette generator →