#1F103F#1F103F

#1F103F is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 22.6% C 0.085 H 293.0°. Best body text is #FFFFFF at 17.44:1 contrast (WCAG AA passes).

Color values

HEX	#1F103F
RGB	rgb(31, 16, 63)
HSL	hsl(259, 59%, 15%)
HSV	hsv(259, 75%, 25%)
CMYK	cmyk(50.8%, 74.6%, 0%, 75.3%)
CIE-LAB	lab(9.16, 20.93, -27.33)
CIE-LCH	lch(9.16, 34.42, 307.46°)
OKLab	oklab(22.6% 0.0332 -0.0781)
OKLCH	oklch(22.6% 0.085 293)
XYZ	xyz(1.6473, 1.0207, 4.8119)
Luminance	0.0102 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F103F #303F10

analogous

#10183F #1F103F #36103F

triadic

#1F103F #3F1F10 #103F1F

tetradic

#1F103F #3F1018 #303F10 #103F36

square

#1F103F #3F1018 #303F10 #103F36

split-complementary

#1F103F #3F3610 #183F10

monochromatic

#0C0618 #0C0618 #1F103F #371C70 #4F29A1

Accessibility & contrast

On white

17.44

#1F103F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#1F103F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F103F

17.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F103F	#FFFFFF	#000000	##FFFFFF
##1F103F	1.00	17.44	1.20	17.44
#FFFFFF	17.44	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A40

Deuteranopia (green-blind)

#00193E

Tritanopia (blue-blind)

#161B25

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #1f103f;
/* rgb */ color: rgb(31, 16, 63);
/* oklch */ color: oklch(22.6% 0.085 293.0);

Tailwind

colors: {
  custom: {
    50: '#5e4f74',
    500: '#1f103f',
    950: '#000000',
  },
}

SCSS

$custom: #1f103f;
$custom-light: #5e4f74;
$custom-dark: #000000;

JSON

{
  "hex": "#1f103f",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 63
  },
  "hsl": {
    "h": 259.149,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.22598,
    "c": 0.0849,
    "h": 293
  },
  "luminance": 0.01021
}

Semantic roles & 50–950 ramp

primary

#1F103F

secondary

#627932

accent

#E345B0

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#050208

muted

#79787B

Preview Lab

Preview with #1F103F

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

Preview Lab → · Contrast checker → · Palette generator →