#1F104D#1F104D

#1F104D is a very dark, moderate violet. Relative luminance 0.012; OKLCH L 24.0% C 0.105 H 286.9°. Best body text is #FFFFFF at 16.94:1 contrast (WCAG AA passes).

Color values

HEX	#1F104D
RGB	rgb(31, 16, 77)
HSL	hsl(255, 66%, 18%)
HSV	hsv(255, 79%, 30%)
CMYK	cmyk(59.7%, 79.2%, 0%, 69.8%)
CIE-LAB	lab(10.54, 25.67, -34.90)
CIE-LCH	lch(10.54, 43.32, 306.34°)
OKLab	oklab(24.01% 0.0304 -0.1003)
OKLCH	oklch(24.01% 0.105 286.9)
XYZ	xyz(2.0895, 1.1976, 7.1408)
Luminance	0.0120 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.55

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F104D #3E4D10

analogous

#101F4D #1F104D #3D104D

triadic

#1F104D #4D1F10 #104D1F

tetradic

#1F104D #4D101F #3E4D10 #104D3D

square

#1F104D #4D101F #3E4D10 #104D3D

split-complementary

#1F104D #4D3D10 #1F4D10

monochromatic

#0A0519 #0B051A #1F104D #331B80 #4825B2

Accessibility & contrast

On white

16.94

#1F104D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#1F104D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F104D

16.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F104D	#FFFFFF	#000000	##FFFFFF
##1F104D	1.00	16.94	1.24	16.94
#FFFFFF	16.94	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E4F

Deuteranopia (green-blind)

#001B4C

Tritanopia (blue-blind)

#0C202D

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #1f104d;
/* rgb */ color: rgb(31, 16, 77);
/* oklch */ color: oklch(24.0% 0.105 286.9);

Tailwind

colors: {
  custom: {
    50: '#61507f',
    500: '#1f104d',
    950: '#000000',
  },
}

SCSS

$custom: #1f104d;
$custom-light: #61507f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f104d",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 77
  },
  "hsl": {
    "h": 254.754,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.2401,
    "c": 0.10486,
    "h": 286.9
  },
  "luminance": 0.01198
}

Semantic roles & 50–950 ramp

primary

#1F104D

secondary

#728732

accent

#E93FBF

background

#F6F4F7

surface

#EBE7EE

border

#C6C3C9

text

#05020A

muted

#7A787C

Preview Lab

Preview with #1F104D

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

Preview Lab → · Contrast checker → · Palette generator →