#1F105E#1F105E

#1F105E is a dark, vivid violet. Relative luminance 0.015; OKLCH L 25.9% C 0.128 H 281.5°. Best body text is #FFFFFF at 16.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F105E
RGB	rgb(31, 16, 94)
HSL	hsl(252, 71%, 22%)
HSV	hsv(252, 83%, 37%)
CMYK	cmyk(67%, 83%, 0%, 63.1%)
CIE-LAB	lab(12.41, 31.39, -43.37)
CIE-LCH	lch(12.41, 53.54, 305.90°)
OKLab	oklab(25.9% 0.0256 -0.1251)
OKLCH	oklch(25.9% 0.128 281.5)
XYZ	xyz(2.7701, 1.4698, 10.7252)
Luminance	0.0147 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F105E #4F5E10

analogous

#10285E #1F105E #46105E

triadic

#1F105E #5E1F10 #105E1F

tetradic

#1F105E #5E1028 #4F5E10 #105E46

square

#1F105E #5E1028 #4F5E10 #105E46

split-complementary

#1F105E #5E4610 #285E10

monochromatic

#09041A #0E072A #1F105E #301992 #4122C7

Accessibility & contrast

On white

16.23

#1F105E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#1F105E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F105E

16.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F105E	#FFFFFF	#000000	##FFFFFF
##1F105E	1.00	16.23	1.29	16.23
#FFFFFF	16.23	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002360

Deuteranopia (green-blind)

#001D5D

Tritanopia (blue-blind)

#002737

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #1f105e;
/* rgb */ color: rgb(31, 16, 94);
/* oklch */ color: oklch(25.9% 0.128 281.5);

Tailwind

colors: {
  custom: {
    50: '#65518d',
    500: '#1f105e',
    950: '#000000',
  },
}

SCSS

$custom: #1f105e;
$custom-light: #65518d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f105e",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 94
  },
  "hsl": {
    "h": 251.538,
    "s": 70.909,
    "l": 21.569
  },
  "oklch": {
    "l": 0.25895,
    "c": 0.12772,
    "h": 281.5
  },
  "luminance": 0.0147
}

Semantic roles & 50–950 ramp

primary

#1F105E

secondary

#849733

accent

#EE3ACB

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F105E

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

Preview Lab → · Contrast checker → · Palette generator →