#1F105C#1F105C

#1F105C is a dark, vivid violet. Relative luminance 0.014; OKLCH L 25.7% C 0.125 H 282.1°. Best body text is #FFFFFF at 16.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F105C
RGB	rgb(31, 16, 92)
HSL	hsl(252, 70%, 21%)
HSV	hsv(252, 83%, 36%)
CMYK	cmyk(66.3%, 82.6%, 0%, 63.9%)
CIE-LAB	lab(12.18, 30.73, -42.41)
CIE-LCH	lch(12.18, 52.37, 305.92°)
OKLab	oklab(25.67% 0.0262 -0.1223)
OKLCH	oklch(25.67% 0.125 282.1)
XYZ	xyz(2.6815, 1.4344, 10.2587)
Luminance	0.0143 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F105C #4D5C10

analogous

#10275C #1F105C #45105C

triadic

#1F105C #5C1F10 #105C1F

tetradic

#1F105C #5C1027 #4D5C10 #105C45

square

#1F105C #5C1027 #4D5C10 #105C45

split-complementary

#1F105C #5C4510 #275C10

monochromatic

#09051A #0D0728 #1F105C #311990 #4222C4

Accessibility & contrast

On white

16.32

#1F105C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#1F105C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F105C

16.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F105C	#FFFFFF	#000000	##FFFFFF
##1F105C	1.00	16.32	1.29	16.32
#FFFFFF	16.32	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225E

Deuteranopia (green-blind)

#001D5B

Tritanopia (blue-blind)

#002635

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #1f105c;
/* rgb */ color: rgb(31, 16, 92);
/* oklch */ color: oklch(25.7% 0.125 282.1);

Tailwind

colors: {
  custom: {
    50: '#64508b',
    500: '#1f105c',
    950: '#000000',
  },
}

SCSS

$custom: #1f105c;
$custom-light: #64508b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f105c",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 92
  },
  "hsl": {
    "h": 251.842,
    "s": 70.37,
    "l": 21.176
  },
  "oklch": {
    "l": 0.25666,
    "c": 0.1251,
    "h": 282.1
  },
  "luminance": 0.01435
}

Semantic roles & 50–950 ramp

primary

#1F105C

secondary

#829533

accent

#ED3BCA

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F105C

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

Preview Lab → · Contrast checker → · Palette generator →