#1F105A#1F105A

#1F105A is a dark, vivid violet. Relative luminance 0.014; OKLCH L 25.4% C 0.122 H 282.6°. Best body text is #FFFFFF at 16.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F105A
RGB	rgb(31, 16, 90)
HSL	hsl(252, 70%, 21%)
HSV	hsv(252, 82%, 35%)
CMYK	cmyk(65.6%, 82.2%, 0%, 64.7%)
CIE-LAB	lab(11.96, 30.06, -41.44)
CIE-LCH	lch(11.96, 51.20, 305.96°)
OKLab	oklab(25.44% 0.0268 -0.1195)
OKLCH	oklch(25.44% 0.122 282.6)
XYZ	xyz(2.5953, 1.3999, 9.8043)
Luminance	0.0140 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F105A #4B5A10

analogous

#10265A #1F105A #44105A

triadic

#1F105A #5A1F10 #105A1F

tetradic

#1F105A #5A1026 #4B5A10 #105A44

square

#1F105A #5A1026 #4B5A10 #105A44

split-complementary

#1F105A #5A4410 #265A10

monochromatic

#09051A #0D0726 #1F105A #31198E #4322C2

Accessibility & contrast

On white

16.41

#1F105A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#1F105A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F105A

16.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F105A	#FFFFFF	#000000	##FFFFFF
##1F105A	1.00	16.41	1.28	16.41
#FFFFFF	16.41	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225C

Deuteranopia (green-blind)

#001D59

Tritanopia (blue-blind)

#002534

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #1f105a;
/* rgb */ color: rgb(31, 16, 90);
/* oklch */ color: oklch(25.4% 0.122 282.6);

Tailwind

colors: {
  custom: {
    50: '#64508a',
    500: '#1f105a',
    950: '#000000',
  },
}

SCSS

$custom: #1f105a;
$custom-light: #64508a;
$custom-dark: #000000;

JSON

{
  "hex": "#1f105a",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 90
  },
  "hsl": {
    "h": 252.162,
    "s": 69.811,
    "l": 20.784
  },
  "oklch": {
    "l": 0.25438,
    "c": 0.12246,
    "h": 282.6
  },
  "luminance": 0.014
}

Semantic roles & 50–950 ramp

primary

#1F105A

secondary

#809333

accent

#ED3BC9

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F105A

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

Preview Lab → · Contrast checker → · Palette generator →