#1B0F57#1B0F57

#1B0F57 is a very dark, vivid violet. Relative luminance 0.013; OKLCH L 24.6% C 0.120 H 280.4°. Best body text is #FFFFFF at 16.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B0F57
RGB	rgb(27, 15, 87)
HSL	hsl(250, 71%, 20%)
HSV	hsv(250, 83%, 34%)
CMYK	cmyk(69%, 82.8%, 0%, 65.9%)
CIE-LAB	lab(11.01, 29.08, -40.98)
CIE-LCH	lch(11.01, 50.25, 305.36°)
OKLab	oklab(24.57% 0.0218 -0.1183)
OKLCH	oklch(24.57% 0.12 280.4)
XYZ	xyz(2.3426, 1.2626, 9.1352)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0F57 #4B570F

analogous

#0F2757 #1B0F57 #3F0F57

triadic

#1B0F57 #571B0F #0F571B

tetradic

#1B0F57 #570F27 #4B570F #0F573F

square

#1B0F57 #570F27 #4B570F #0F573F

split-complementary

#1B0F57 #573F0F #27570F

monochromatic

#08051A #0B0623 #1B0F57 #2B188B #3B21BF

Accessibility & contrast

On white

16.77

#1B0F57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#1B0F57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0F57

16.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0F57	#FFFFFF	#000000	##FFFFFF
##1B0F57	1.00	16.77	1.25	16.77
#FFFFFF	16.77	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002059

Deuteranopia (green-blind)

#001B56

Tritanopia (blue-blind)

#002432

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #1b0f57;
/* rgb */ color: rgb(27, 15, 87);
/* oklch */ color: oklch(24.6% 0.120 280.4);

Tailwind

colors: {
  custom: {
    50: '#614f87',
    500: '#1b0f57',
    950: '#000000',
  },
}

SCSS

$custom: #1b0f57;
$custom-light: #614f87;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0f57",
  "rgb": {
    "r": 27,
    "g": 15,
    "b": 87
  },
  "hsl": {
    "h": 250,
    "s": 70.588,
    "l": 20
  },
  "oklch": {
    "l": 0.24573,
    "c": 0.12028,
    "h": 280.4
  },
  "luminance": 0.01263
}

Semantic roles & 50–950 ramp

primary

#1B0F57

secondary

#819131

accent

#ED3AD0

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020B

muted

#7A787C

Preview Lab

Preview with #1B0F57

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

Preview Lab → · Contrast checker → · Palette generator →