#100B21#100B21

#100B21 is a very dark, muted violet. Relative luminance 0.005; OKLCH L 17.0% C 0.045 H 291.4°. Best body text is #FFFFFF at 19.23:1 contrast (WCAG AA passes).

Color values

HEX	#100B21
RGB	rgb(16, 11, 33)
HSL	hsl(254, 50%, 9%)
HSV	hsv(254, 67%, 13%)
CMYK	cmyk(51.5%, 66.7%, 0%, 87.1%)
CIE-LAB	lab(4.15, 7.01, -13.15)
CIE-LCH	lch(4.15, 14.91, 298.07°)
OKLab	oklab(17.02% 0.0163 -0.0415)
OKLCH	oklch(17.02% 0.045 291.4)
XYZ	xyz(0.6078, 0.4593, 1.4952)
Luminance	0.0046 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 9.77

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B21 #1C210B

analogous

#0B1121 #100B21 #1B0B21

triadic

#100B21 #21100B #0B2110

tetradic

#100B21 #210B11 #1C210B #0B211B

square

#100B21 #210B11 #1C210B #0B211B

split-complementary

#100B21 #211B0B #11210B

monochromatic

#0B0817 #0B0817 #100B21 #261A4F #3D2A7D

Accessibility & contrast

On white

19.23

#100B21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#100B21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B21

19.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B21	#FFFFFF	#000000	##FFFFFF
##100B21	1.00	19.23	1.09	19.23
#FFFFFF	19.23	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#040F22

Deuteranopia (green-blind)

#040E20

Tritanopia (blue-blind)

#0C0F14

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #100b21;
/* rgb */ color: rgb(16, 11, 33);
/* oklch */ color: oklch(17.0% 0.045 291.4);

Tailwind

colors: {
  custom: {
    50: '#4e4b5c',
    500: '#100b21',
    950: '#000000',
  },
}

SCSS

$custom: #100b21;
$custom-light: #4e4b5c;
$custom-dark: #000000;

JSON

{
  "hex": "#100b21",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 33
  },
  "hsl": {
    "h": 253.636,
    "s": 50,
    "l": 8.627
  },
  "oklch": {
    "l": 0.17017,
    "c": 0.04454,
    "h": 291.4
  },
  "luminance": 0.00459
}

Semantic roles & 50–950 ramp

primary

#100B21

secondary

#515C2C

accent

#DA4EBA

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010104

muted

#777779

Preview Lab

Preview with #100B21

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

Preview Lab → · Contrast checker → · Palette generator →