#100D31#100D31

#100D31 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.0% C 0.069 H 281.3°. Best body text is #FFFFFF at 18.68:1 contrast (WCAG AA passes).

Color values

HEX	#100D31
RGB	rgb(16, 13, 49)
HSL	hsl(245, 58%, 12%)
HSV	hsv(245, 73%, 19%)
CMYK	cmyk(67.3%, 73.5%, 0%, 80.8%)
CIE-LAB	lab(5.60, 13.15, -23.01)
CIE-LCH	lch(5.60, 26.50, 299.74°)
OKLab	oklab(18.96% 0.0135 -0.0675)
OKLCH	oklch(18.96% 0.069 281.3)
XYZ	xyz(0.9118, 0.6197, 2.9767)
Luminance	0.0062 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D31 #2E310D

analogous

#0D1C31 #100D31 #220D31

triadic

#100D31 #31100D #0D3110

tetradic

#100D31 #310D1C #2E310D #0D3122

square

#100D31 #310D1C #2E310D #0D3122

split-complementary

#100D31 #31220D #1C310D

monochromatic

#080618 #080618 #100D31 #201A61 #302792

Accessibility & contrast

On white

18.68

#100D31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#100D31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D31

18.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D31	#FFFFFF	#000000	##FFFFFF
##100D31	1.00	18.68	1.12	18.68
#FFFFFF	18.68	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001432

Deuteranopia (green-blind)

#001130

Tritanopia (blue-blind)

#02161D

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #100d31;
/* rgb */ color: rgb(16, 13, 49);
/* oklch */ color: oklch(19.0% 0.069 281.3);

Tailwind

colors: {
  custom: {
    50: '#524c69',
    500: '#100d31',
    950: '#000000',
  },
}

SCSS

$custom: #100d31;
$custom-light: #524c69;
$custom-dark: #000000;

JSON

{
  "hex": "#100d31",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 49
  },
  "hsl": {
    "h": 245,
    "s": 58.065,
    "l": 12.157
  },
  "oklch": {
    "l": 0.18964,
    "c": 0.06886,
    "h": 281.3
  },
  "luminance": 0.0062
}

Semantic roles & 50–950 ramp

primary

#100D31

secondary

#676C2E

accent

#E147D4

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #100D31

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

Preview Lab → · Contrast checker → · Palette generator →