#1F105F#1F105F

#1F105F is a dark, vivid violet. Relative luminance 0.015; OKLCH L 26.0% C 0.129 H 281.3°. Best body text is #FFFFFF at 16.18:1 contrast (WCAG AA passes).

Color values

HEX	#1F105F
RGB	rgb(31, 16, 95)
HSL	hsl(251, 71%, 22%)
HSV	hsv(251, 83%, 37%)
CMYK	cmyk(67.4%, 83.2%, 0%, 62.7%)
CIE-LAB	lab(12.53, 31.72, -43.85)
CIE-LCH	lch(12.53, 54.13, 305.88°)
OKLab	oklab(26.01% 0.0252 -0.1265)
OKLCH	oklch(26.01% 0.129 281.3)
XYZ	xyz(2.8153, 1.4879, 10.9631)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F105F #505F10

analogous

#10295F #1F105F #47105F

triadic

#1F105F #5F1F10 #105F1F

tetradic

#1F105F #5F1029 #505F10 #105F47

square

#1F105F #5F1029 #505F10 #105F47

split-complementary

#1F105F #5F4710 #295F10

monochromatic

#09041A #0E072B #1F105F #301993 #4122C8

Accessibility & contrast

On white

16.18

#1F105F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#1F105F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F105F

16.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F105F	#FFFFFF	#000000	##FFFFFF
##1F105F	1.00	16.18	1.30	16.18
#FFFFFF	16.18	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002361

Deuteranopia (green-blind)

#001E5E

Tritanopia (blue-blind)

#002737

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #1f105f;
/* rgb */ color: rgb(31, 16, 95);
/* oklch */ color: oklch(26.0% 0.129 281.3);

Tailwind

colors: {
  custom: {
    50: '#65518d',
    500: '#1f105f',
    950: '#000000',
  },
}

SCSS

$custom: #1f105f;
$custom-light: #65518d;
$custom-dark: #000000;

JSON

{
  "hex": "#1f105f",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 95
  },
  "hsl": {
    "h": 251.392,
    "s": 71.171,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26011,
    "c": 0.12902,
    "h": 281.3
  },
  "luminance": 0.01488
}

Semantic roles & 50–950 ramp

primary

#1F105F

secondary

#859833

accent

#EE3ACC

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1F105F

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

Preview Lab → · Contrast checker → · Palette generator →