#1F133D#1F133D

#1F133D is a very dark, moderate violet. Relative luminance 0.011; OKLCH L 23.0% C 0.077 H 292.4°. Best body text is #FFFFFF at 17.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F133D
RGB	rgb(31, 19, 61)
HSL	hsl(257, 53%, 16%)
HSV	hsv(257, 69%, 24%)
CMYK	cmyk(49.2%, 68.9%, 0%, 76.1%)
CIE-LAB	lab(9.75, 18.21, -24.95)
CIE-LCH	lch(9.75, 30.89, 306.13°)
OKLab	oklab(22.97% 0.0294 -0.0711)
OKLCH	oklch(22.97% 0.077 292.4)
XYZ	xyz(1.6400, 1.0939, 4.5387)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F133D #313D13

analogous

#131C3D #1F133D #34133D

triadic

#1F133D #3D1F13 #133D1F

tetradic

#1F133D #3D131C #313D13 #133D34

square

#1F133D #3D131C #313D13 #133D34

split-complementary

#1F133D #3D3413 #1C3D13

monochromatic

#0C0717 #0C0717 #1F133D #37226C #4E309A

Accessibility & contrast

On white

17.23

#1F133D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#1F133D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F133D

17.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F133D	#FFFFFF	#000000	##FFFFFF
##1F133D	1.00	17.23	1.22	17.23
#FFFFFF	17.23	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C3E

Deuteranopia (green-blind)

#001A3C

Tritanopia (blue-blind)

#171C25

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #1f133d;
/* rgb */ color: rgb(31, 19, 61);
/* oklch */ color: oklch(23.0% 0.077 292.4);

Tailwind

colors: {
  custom: {
    50: '#5d5173',
    500: '#1f133d',
    950: '#000000',
  },
}

SCSS

$custom: #1f133d;
$custom-light: #5d5173;
$custom-dark: #000000;

JSON

{
  "hex": "#1f133d",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 61
  },
  "hsl": {
    "h": 257.143,
    "s": 52.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.22969,
    "c": 0.07697,
    "h": 292.4
  },
  "luminance": 0.01094
}

Semantic roles & 50–950 ramp

primary

#1F133D

secondary

#637536

accent

#DC4CB3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040208

muted

#79787B

Preview Lab

Preview with #1F133D

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

Preview Lab → · Contrast checker → · Palette generator →