#1F105D#1F105D

#1F105D is a dark, vivid violet. Relative luminance 0.015; OKLCH L 25.8% C 0.126 H 281.8°. Best body text is #FFFFFF at 16.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F105D
RGB	rgb(31, 16, 93)
HSL	hsl(252, 71%, 21%)
HSV	hsv(252, 83%, 36%)
CMYK	cmyk(66.7%, 82.8%, 0%, 63.5%)
CIE-LAB	lab(12.30, 31.06, -42.89)
CIE-LCH	lch(12.30, 52.96, 305.91°)
OKLab	oklab(25.78% 0.0259 -0.1237)
OKLCH	oklch(25.78% 0.126 281.8)
XYZ	xyz(2.7255, 1.4520, 10.4904)
Luminance	0.0145 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F105D #4E5D10

analogous

#10285D #1F105D #46105D

triadic

#1F105D #5D1F10 #105D1F

tetradic

#1F105D #5D1028 #4E5D10 #105D46

square

#1F105D #5D1028 #4E5D10 #105D46

split-complementary

#1F105D #5D4610 #285D10

monochromatic

#09041A #0E0729 #1F105D #301991 #4222C5

Accessibility & contrast

On white

16.27

#1F105D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#1F105D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F105D

16.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F105D	#FFFFFF	#000000	##FFFFFF
##1F105D	1.00	16.27	1.29	16.27
#FFFFFF	16.27	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00235F

Deuteranopia (green-blind)

#001D5C

Tritanopia (blue-blind)

#002736

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #1f105d;
/* rgb */ color: rgb(31, 16, 93);
/* oklch */ color: oklch(25.8% 0.126 281.8);

Tailwind

colors: {
  custom: {
    50: '#64518c',
    500: '#1f105d',
    950: '#000000',
  },
}

SCSS

$custom: #1f105d;
$custom-light: #64518c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f105d",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 93
  },
  "hsl": {
    "h": 251.688,
    "s": 70.642,
    "l": 21.373
  },
  "oklch": {
    "l": 0.2578,
    "c": 0.12641,
    "h": 281.8
  },
  "luminance": 0.01452
}

Semantic roles & 50–950 ramp

primary

#1F105D

secondary

#839633

accent

#ED3ACB

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F105D

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

Preview Lab → · Contrast checker → · Palette generator →