#100B2A#100B2A

#100B2A is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.8% C 0.060 H 285.9°. Best body text is #FFFFFF at 19.03:1 contrast (WCAG AA passes).

Color values

HEX	#100B2A
RGB	rgb(16, 11, 42)
HSL	hsl(250, 58%, 10%)
HSV	hsv(250, 74%, 16%)
CMYK	cmyk(61.9%, 73.8%, 0%, 83.5%)
CIE-LAB	lab(4.67, 10.66, -19.25)
CIE-LCH	lch(4.67, 22.01, 298.97°)
OKLab	oklab(17.84% 0.0166 -0.0581)
OKLCH	oklch(17.84% 0.06 285.9)
XYZ	xyz(0.7512, 0.5166, 2.2502)
Luminance	0.0052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B2A #252A0B

analogous

#0B152A #100B2A #1F0B2A

triadic

#100B2A #2A100B #0B2A10

tetradic

#100B2A #2A0B15 #252A0B #0B2A1F

square

#100B2A #2A0B15 #252A0B #0B2A1F

split-complementary

#100B2A #2A1F0B #152A0B

monochromatic

#090618 #090618 #100B2A #22185A #35248B

Accessibility & contrast

On white

19.03

#100B2A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#100B2A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B2A

19.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B2A	#FFFFFF	#000000	##FFFFFF
##100B2A	1.00	19.03	1.10	19.03
#FFFFFF	19.03	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00112B

Deuteranopia (green-blind)

#000F29

Tritanopia (blue-blind)

#071218

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #100b2a;
/* rgb */ color: rgb(16, 11, 42);
/* oklch */ color: oklch(17.8% 0.060 285.9);

Tailwind

colors: {
  custom: {
    50: '#504b63',
    500: '#100b2a',
    950: '#000000',
  },
}

SCSS

$custom: #100b2a;
$custom-light: #504b63;
$custom-dark: #000000;

JSON

{
  "hex": "#100b2a",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 42
  },
  "hsl": {
    "h": 249.677,
    "s": 58.491,
    "l": 10.392
  },
  "oklch": {
    "l": 0.17835,
    "c": 0.06042,
    "h": 285.9
  },
  "luminance": 0.00517
}

Semantic roles & 50–950 ramp

primary

#100B2A

secondary

#5C662B

accent

#E246C9

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#020105

muted

#787779

Preview Lab

Preview with #100B2A

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

Preview Lab → · Contrast checker → · Palette generator →