#100A31#100A31

#100A31 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.4% C 0.074 H 283.4°. Best body text is #FFFFFF at 18.92:1 contrast (WCAG AA passes).

Color values

HEX	#100A31
RGB	rgb(16, 10, 49)
HSL	hsl(249, 66%, 12%)
HSV	hsv(249, 80%, 19%)
CMYK	cmyk(67.3%, 79.6%, 0%, 80.8%)
CIE-LAB	lab(4.96, 14.51, -24.04)
CIE-LCH	lch(4.96, 28.08, 301.12°)
OKLab	oklab(18.35% 0.0171 -0.0716)
OKLCH	oklch(18.35% 0.074 283.4)
XYZ	xyz(0.8764, 0.5489, 2.9649)
Luminance	0.0055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100A31 #2B310A

analogous

#0A1831 #100A31 #240A31

triadic

#100A31 #31100A #0A3110

tetradic

#100A31 #310A18 #2B310A #0A3124

square

#100A31 #310A18 #2B310A #0A3124

split-complementary

#100A31 #31240A #18310A

monochromatic

#080519 #080519 #100A31 #211464 #311F97

Accessibility & contrast

On white

18.92

#100A31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#100A31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A31

18.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A31	#FFFFFF	#000000	##FFFFFF
##100A31	1.00	18.92	1.11	18.92
#FFFFFF	18.92	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001232

Deuteranopia (green-blind)

#000F30

Tritanopia (blue-blind)

#03141C

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #100a31;
/* rgb */ color: rgb(16, 10, 49);
/* oklch */ color: oklch(18.4% 0.074 283.4);

Tailwind

colors: {
  custom: {
    50: '#514a69',
    500: '#100a31',
    950: '#000000',
  },
}

SCSS

$custom: #100a31;
$custom-light: #514a69;
$custom-dark: #000000;

JSON

{
  "hex": "#100a31",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 49
  },
  "hsl": {
    "h": 249.231,
    "s": 66.102,
    "l": 11.569
  },
  "oklch": {
    "l": 0.1835,
    "c": 0.07358,
    "h": 283.4
  },
  "luminance": 0.00549
}

Semantic roles & 50–950 ramp

primary

#100A31

secondary

#646E29

accent

#E93FCF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #100A31

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

Preview Lab → · Contrast checker → · Palette generator →