#1B1063#1B1063

#1B1063 is a dark, vivid blue. Relative luminance 0.015; OKLCH L 26.1% C 0.135 H 277.5°. Best body text is #FFFFFF at 16.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B1063
RGB	rgb(27, 16, 99)
HSL	hsl(248, 72%, 23%)
HSV	hsv(248, 84%, 39%)
CMYK	cmyk(72.7%, 83.8%, 0%, 61.2%)
CIE-LAB	lab(12.63, 32.61, -46.36)
CIE-LCH	lch(12.63, 56.68, 305.12°)
OKLab	oklab(26.13% 0.0176 -0.134)
OKLCH	oklch(26.13% 0.135 277.5)
XYZ	xyz(2.8887, 1.5042, 11.9401)
Luminance	0.0150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1063 #586310

analogous

#102E63 #1B1063 #451063

triadic

#1B1063 #631B10 #10631B

tetradic

#1B1063 #63102E #586310 #106345

square

#1B1063 #63102E #586310 #106345

split-complementary

#1B1063 #634510 #2E6310

monochromatic

#07041A #0D072E #1B1063 #291998 #3821CC

Accessibility & contrast

On white

16.14

#1B1063 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#1B1063 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1063

16.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1063	#FFFFFF	#000000	##FFFFFF
##1B1063	1.00	16.14	1.30	16.14
#FFFFFF	16.14	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002465

Deuteranopia (green-blind)

#001D62

Tritanopia (blue-blind)

#002939

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1b1063;
/* rgb */ color: rgb(27, 16, 99);
/* oklch */ color: oklch(26.1% 0.135 277.5);

Tailwind

colors: {
  custom: {
    50: '#645190',
    500: '#1b1063',
    950: '#000000',
  },
}

SCSS

$custom: #1b1063;
$custom-light: #645190;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1063",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 99
  },
  "hsl": {
    "h": 247.952,
    "s": 72.174,
    "l": 22.549
  },
  "oklch": {
    "l": 0.26131,
    "c": 0.1351,
    "h": 277.5
  },
  "luminance": 0.01504
}

Semantic roles & 50–950 ramp

primary

#1B1063

secondary

#8E9C33

accent

#EF39D7

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06020D

muted

#7A787E

Preview Lab

Preview with #1B1063

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

Preview Lab → · Contrast checker → · Palette generator →