#100B3C#100B3C

#100B3C is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.8% C 0.089 H 279.0°. Best body text is #FFFFFF at 18.50:1 contrast (WCAG AA passes).

Color values

HEX	#100B3C
RGB	rgb(16, 11, 60)
HSL	hsl(246, 69%, 14%)
HSV	hsv(246, 82%, 24%)
CMYK	cmyk(73.3%, 81.7%, 0%, 76.5%)
CIE-LAB	lab(6.10, 19.47, -30.23)
CIE-LCH	lch(6.10, 35.96, 302.78°)
OKLab	oklab(19.77% 0.014 -0.0881)
OKLCH	oklch(19.77% 0.089 279)
XYZ	xyz(1.1487, 0.6757, 4.3440)
Luminance	0.0068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B3C #373C0B

analogous

#0B1F3C #100B3C #290B3C

triadic

#100B3C #3C100B #0B3C10

tetradic

#100B3C #3C0B1F #373C0B #0B3C29

square

#100B3C #3C0B1F #373C0B #0B3C29

split-complementary

#100B3C #3C290B #1F3C0B

monochromatic

#07051A #07051A #100B3C #1E1470 #2C1EA3

Accessibility & contrast

On white

18.50

#100B3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100B3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B3C

18.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B3C	#FFFFFF	#000000	##FFFFFF
##100B3C	1.00	18.50	1.14	18.50
#FFFFFF	18.50	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00153D

Deuteranopia (green-blind)

#00123B

Tritanopia (blue-blind)

#001822

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100b3c;
/* rgb */ color: rgb(16, 11, 60);
/* oklch */ color: oklch(19.8% 0.089 279.0);

Tailwind

colors: {
  custom: {
    50: '#554b72',
    500: '#100b3c',
    950: '#000000',
  },
}

SCSS

$custom: #100b3c;
$custom-light: #554b72;
$custom-dark: #000000;

JSON

{
  "hex": "#100b3c",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 60
  },
  "hsl": {
    "h": 246.122,
    "s": 69.014,
    "l": 13.922
  },
  "oklch": {
    "l": 0.19774,
    "c": 0.0892,
    "h": 279
  },
  "luminance": 0.00676
}

Semantic roles & 50–950 ramp

primary

#100B3C

secondary

#71792A

accent

#EC3CDA

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100B3C

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

Preview Lab → · Contrast checker → · Palette generator →