#1F0440#1F0440

#1F0440 is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.9% C 0.103 H 296.9°. Best body text is #FFFFFF at 18.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F0440
RGB	rgb(31, 4, 64)
HSL	hsl(267, 88%, 13%)
HSV	hsv(267, 94%, 25%)
CMYK	cmyk(51.6%, 93.8%, 0%, 74.9%)
CIE-LAB	lab(6.76, 28.25, -31.96)
CIE-LCH	lch(6.76, 42.66, 311.47°)
OKLab	oklab(20.89% 0.0467 -0.092)
OKLCH	oklch(20.89% 0.103 296.9)
XYZ	xyz(1.5337, 0.7483, 4.9131)
Luminance	0.0075 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F0440 #254004

analogous

#040740 #1F0440 #3D0440

triadic

#1F0440 #401F04 #04401F

tetradic

#1F0440 #400407 #254004 #04403D

square

#1F0440 #400407 #254004 #04403D

split-complementary

#1F0440 #403D04 #074004

monochromatic

#0E021D #0E021D #1F0440 #3B087A #570BB3

Accessibility & contrast

On white

18.27

#1F0440 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#1F0440 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F0440

18.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F0440	#FFFFFF	#000000	##FFFFFF
##1F0440	1.00	18.27	1.15	18.27
#FFFFFF	18.27	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001542

Deuteranopia (green-blind)

#00143F

Tritanopia (blue-blind)

#161523

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #1f0440;
/* rgb */ color: rgb(31, 4, 64);
/* oklch */ color: oklch(20.9% 0.103 296.9);

Tailwind

colors: {
  custom: {
    50: '#5f4875',
    500: '#1f0440',
    950: '#000000',
  },
}

SCSS

$custom: #1f0440;
$custom-light: #5f4875;
$custom-dark: #000000;

JSON

{
  "hex": "#1f0440",
  "rgb": {
    "r": 31,
    "g": 4,
    "b": 64
  },
  "hsl": {
    "h": 267,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.20887,
    "c": 0.10315,
    "h": 296.9
  },
  "luminance": 0.00748
}

Semantic roles & 50–950 ramp

primary

#1F0440

secondary

#55811F

accent

#FE299F

background

#F5F4F7

surface

#EAE6ED

border

#C6C2C8

text

#050008

muted

#79777B

Preview Lab

Preview with #1F0440

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

Preview Lab → · Contrast checker → · Palette generator →