#100C2B#100C2B

#100C2B is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.2% C 0.060 H 284.5°. Best body text is #FFFFFF at 18.93:1 contrast (WCAG AA passes).

Color values

HEX	#100C2B
RGB	rgb(16, 12, 43)
HSL	hsl(248, 56%, 11%)
HSV	hsv(248, 72%, 17%)
CMYK	cmyk(62.8%, 72.1%, 0%, 83.1%)
CIE-LAB	lab(4.95, 10.68, -19.57)
CIE-LCH	lch(4.95, 22.29, 298.63°)
OKLab	oklab(18.15% 0.0151 -0.0585)
OKLCH	oklch(18.15% 0.06 284.5)
XYZ	xyz(0.7811, 0.5475, 2.3495)
Luminance	0.0055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.94

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C2B #272B0C

analogous

#0C172B #100C2B #1F0C2B

triadic

#100C2B #2B100C #0C2B10

tetradic

#100C2B #2B0C17 #272B0C #0C2B1F

square

#100C2B #2B0C17 #272B0C #0C2B1F

split-complementary

#100C2B #2B1F0C #172B0C

monochromatic

#090718 #090718 #100C2B #22195B #34278B

Accessibility & contrast

On white

18.93

#100C2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#100C2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C2B

18.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C2B	#FFFFFF	#000000	##FFFFFF
##100C2B	1.00	18.93	1.11	18.93
#FFFFFF	18.93	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00122C

Deuteranopia (green-blind)

#00102A

Tritanopia (blue-blind)

#061319

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #100c2b;
/* rgb */ color: rgb(16, 12, 43);
/* oklch */ color: oklch(18.2% 0.060 284.5);

Tailwind

colors: {
  custom: {
    50: '#504c64',
    500: '#100c2b',
    950: '#000000',
  },
}

SCSS

$custom: #100c2b;
$custom-light: #504c64;
$custom-dark: #000000;

JSON

{
  "hex": "#100c2b",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 43
  },
  "hsl": {
    "h": 247.742,
    "s": 56.364,
    "l": 10.784
  },
  "oklch": {
    "l": 0.18152,
    "c": 0.06039,
    "h": 284.5
  },
  "luminance": 0.00548
}

Semantic roles & 50–950 ramp

primary

#100C2B

secondary

#5F662C

accent

#E048CC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020105

muted

#78777A

Preview Lab

Preview with #100C2B

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

Preview Lab → · Contrast checker → · Palette generator →