#1F103A#1F103A

#1F103A is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 22.1% C 0.077 H 295.9°. Best body text is #FFFFFF at 17.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F103A
RGB	rgb(31, 16, 58)
HSL	hsl(261, 57%, 15%)
HSV	hsv(261, 72%, 23%)
CMYK	cmyk(46.6%, 72.4%, 0%, 77.3%)
CIE-LAB	lab(8.72, 19.27, -24.47)
CIE-LCH	lch(8.72, 31.15, 308.22°)
OKLab	oklab(22.13% 0.0338 -0.0697)
OKLCH	oklch(22.13% 0.077 295.9)
XYZ	xyz(1.5139, 0.9673, 4.1091)
Luminance	0.0097 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F103A #2B3A10

analogous

#10163A #1F103A #34103A

triadic

#1F103A #3A1F10 #103A1F

tetradic

#1F103A #3A1016 #2B3A10 #103A34

square

#1F103A #3A1016 #2B3A10 #103A34

split-complementary

#1F103A #3A3410 #163A10

monochromatic

#0D0718 #0D0718 #1F103A #391D6A #522A9A

Accessibility & contrast

On white

17.60

#1F103A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#1F103A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F103A

17.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F103A	#FFFFFF	#000000	##FFFFFF
##1F103A	1.00	17.60	1.19	17.60
#FFFFFF	17.60	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193B

Deuteranopia (green-blind)

#001839

Tritanopia (blue-blind)

#181923

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #1f103a;
/* rgb */ color: rgb(31, 16, 58);
/* oklch */ color: oklch(22.1% 0.077 295.9);

Tailwind

colors: {
  custom: {
    50: '#5d4f70',
    500: '#1f103a',
    950: '#000000',
  },
}

SCSS

$custom: #1f103a;
$custom-light: #5d4f70;
$custom-dark: #000000;

JSON

{
  "hex": "#1f103a",
  "rgb": {
    "r": 31,
    "g": 16,
    "b": 58
  },
  "hsl": {
    "h": 261.429,
    "s": 56.757,
    "l": 14.51
  },
  "oklch": {
    "l": 0.22134,
    "c": 0.07749,
    "h": 295.9
  },
  "luminance": 0.00967
}

Semantic roles & 50–950 ramp

primary

#1F103A

secondary

#5C7432

accent

#E048AA

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#040207

muted

#79787A

Preview Lab

Preview with #1F103A

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

Preview Lab → · Contrast checker → · Palette generator →