#100C28#100C28

#100C28 is a very dark, muted blue. Relative luminance 0.005; OKLCH L 17.9% C 0.055 H 285.9°. Best body text is #FFFFFF at 19.00:1 contrast (WCAG AA passes).

Color values

HEX	#100C28
RGB	rgb(16, 12, 40)
HSL	hsl(249, 54%, 10%)
HSV	hsv(249, 70%, 16%)
CMYK	cmyk(60%, 70%, 0%, 84.3%)
CIE-LAB	lab(4.75, 9.33, -17.60)
CIE-LCH	lch(4.75, 19.92, 297.93°)
OKLab	oklab(17.87% 0.0151 -0.053)
OKLCH	oklch(17.87% 0.055 285.9)
XYZ	xyz(0.7280, 0.5263, 2.0703)
Luminance	0.0053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.03

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C28 #24280C

analogous

#0C1628 #100C28 #1E0C28

triadic

#100C28 #28100C #0C2810

tetradic

#100C28 #280C16 #24280C #0C281E

square

#100C28 #280C16 #24280C #0C281E

split-complementary

#100C28 #281E0C #16280C

monochromatic

#090718 #090718 #100C28 #231A57 #362886

Accessibility & contrast

On white

19.00

#100C28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#100C28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C28

19.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C28	#FFFFFF	#000000	##FFFFFF
##100C28	1.00	19.00	1.11	19.00
#FFFFFF	19.00	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	19.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011129

Deuteranopia (green-blind)

#010F27

Tritanopia (blue-blind)

#081218

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #100c28;
/* rgb */ color: rgb(16, 12, 40);
/* oklch */ color: oklch(17.9% 0.055 285.9);

Tailwind

colors: {
  custom: {
    50: '#4f4c62',
    500: '#100c28',
    950: '#000000',
  },
}

SCSS

$custom: #100c28;
$custom-light: #4f4c62;
$custom-dark: #000000;

JSON

{
  "hex": "#100c28",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 40
  },
  "hsl": {
    "h": 248.571,
    "s": 53.846,
    "l": 10.196
  },
  "oklch": {
    "l": 0.1787,
    "c": 0.05516,
    "h": 285.9
  },
  "luminance": 0.00526
}

Semantic roles & 50–950 ramp

primary

#100C28

secondary

#5B632D

accent

#DD4BC8

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#020105

muted

#787779

Preview Lab

Preview with #100C28

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

Preview Lab → · Contrast checker → · Palette generator →