#1B0C57#1B0C57

#1B0C57 is a very dark, vivid violet. Relative luminance 0.012; OKLCH L 24.2% C 0.123 H 281.1°. Best body text is #FFFFFF at 16.98:1 contrast (WCAG AA passes).

Color values

HEX	#1B0C57
RGB	rgb(27, 12, 87)
HSL	hsl(252, 76%, 19%)
HSV	hsv(252, 86%, 34%)
CMYK	cmyk(69%, 86.2%, 0%, 65.9%)
CIE-LAB	lab(10.44, 30.73, -41.93)
CIE-LCH	lch(10.44, 51.99, 306.24°)
OKLab	oklab(24.17% 0.0237 -0.121)
OKLCH	oklch(24.17% 0.123 281.1)
XYZ	xyz(2.3032, 1.1839, 9.1221)
Luminance	0.0118 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0C57 #48570C

analogous

#0C2357 #1B0C57 #410C57

triadic

#1B0C57 #571B0C #0C571B

tetradic

#1B0C57 #570C23 #48570C #0C5741

square

#1B0C57 #570C23 #48570C #0C5741

split-complementary

#1B0C57 #57410C #23570C

monochromatic

#08041B #0A0521 #1B0C57 #2C138D #3C1BC3

Accessibility & contrast

On white

16.98

#1B0C57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#1B0C57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0C57

16.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0C57	#FFFFFF	#000000	##FFFFFF
##1B0C57	1.00	16.98	1.24	16.98
#FFFFFF	16.98	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F59

Deuteranopia (green-blind)

#001A56

Tritanopia (blue-blind)

#002332

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #1b0c57;
/* rgb */ color: rgb(27, 12, 87);
/* oklch */ color: oklch(24.2% 0.123 281.1);

Tailwind

colors: {
  custom: {
    50: '#614e87',
    500: '#1b0c57',
    950: '#000000',
  },
}

SCSS

$custom: #1b0c57;
$custom-light: #614e87;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0c57",
  "rgb": {
    "r": 27,
    "g": 12,
    "b": 87
  },
  "hsl": {
    "h": 252,
    "s": 75.758,
    "l": 19.412
  },
  "oklch": {
    "l": 0.24173,
    "c": 0.12331,
    "h": 281.1
  },
  "luminance": 0.01184
}

Semantic roles & 50–950 ramp

primary

#1B0C57

secondary

#7E922D

accent

#F235CD

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06010B

muted

#7A777C

Preview Lab

Preview with #1B0C57

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

Preview Lab → · Contrast checker → · Palette generator →