#100B34#100B34

#100B34 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.9% C 0.077 H 281.6°. Best body text is #FFFFFF at 18.76:1 contrast (WCAG AA passes).

Color values

HEX	#100B34
RGB	rgb(16, 11, 52)
HSL	hsl(247, 65%, 12%)
HSV	hsv(247, 79%, 20%)
CMYK	cmyk(69.2%, 78.8%, 0%, 79.6%)
CIE-LAB	lab(5.40, 15.59, -25.55)
CIE-LCH	lch(5.40, 29.93, 301.39°)
OKLab	oklab(18.87% 0.0155 -0.0753)
OKLCH	oklch(18.87% 0.077 281.6)
XYZ	xyz(0.9530, 0.5974, 3.3132)
Luminance	0.0060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight

#03012D

ΔE00 3.07

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B34 #2F340B

analogous

#0B1B34 #100B34 #250B34

triadic

#100B34 #34100B #0B3410

tetradic

#100B34 #340B1B #2F340B #0B3425

square

#100B34 #340B1B #2F340B #0B3425

split-complementary

#100B34 #34250B #1B340B

monochromatic

#080519 #080519 #100B34 #201667 #2F2099

Accessibility & contrast

On white

18.76

#100B34 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#100B34 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B34

18.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B34	#FFFFFF	#000000	##FFFFFF
##100B34	1.00	18.76	1.12	18.76
#FFFFFF	18.76	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001335

Deuteranopia (green-blind)

#001033

Tritanopia (blue-blind)

#00161E

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #100b34;
/* rgb */ color: rgb(16, 11, 52);
/* oklch */ color: oklch(18.9% 0.077 281.6);

Tailwind

colors: {
  custom: {
    50: '#524b6c',
    500: '#100b34',
    950: '#000000',
  },
}

SCSS

$custom: #100b34;
$custom-light: #524b6c;
$custom-dark: #000000;

JSON

{
  "hex": "#100b34",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 52
  },
  "hsl": {
    "h": 247.317,
    "s": 65.079,
    "l": 12.353
  },
  "oklch": {
    "l": 0.1887,
    "c": 0.07685,
    "h": 281.6
  },
  "luminance": 0.00597
}

Semantic roles & 50–950 ramp

primary

#100B34

secondary

#68712A

accent

#E840D4

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020107

muted

#78777A

Preview Lab

Preview with #100B34

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

Preview Lab → · Contrast checker → · Palette generator →