#100F2B#100F2B

#100F2B is a very dark, muted blue. Relative luminance 0.006; OKLCH L 18.8% C 0.055 H 281.3°. Best body text is #FFFFFF at 18.66:1 contrast (WCAG AA passes).

Color values

HEX	#100F2B
RGB	rgb(16, 15, 43)
HSL	hsl(242, 48%, 11%)
HSV	hsv(242, 65%, 17%)
CMYK	cmyk(62.8%, 65.1%, 0%, 83.1%)
CIE-LAB	lab(5.66, 9.23, -18.45)
CIE-LCH	lch(5.66, 20.62, 296.57°)
OKLab	oklab(18.85% 0.0108 -0.054)
OKLCH	oklch(18.85% 0.055 281.3)
XYZ	xyz(0.8204, 0.6262, 2.3627)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.66

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F2B #2A2B0F

analogous

#0F1C2B #100F2B #1E0F2B

triadic

#100F2B #2B100F #0F2B10

tetradic

#100F2B #2B0F1C #2A2B0F #0F2B1E

square

#100F2B #2B0F1C #2A2B0F #0F2B1E

split-complementary

#100F2B #2B1E0F #1C2B0F

monochromatic

#080817 #080817 #100F2B #211F58 #322F86

Accessibility & contrast

On white

18.66

#100F2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100F2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F2B

18.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F2B	#FFFFFF	#000000	##FFFFFF
##100F2B	1.00	18.66	1.13	18.66
#FFFFFF	18.66	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03132C

Deuteranopia (green-blind)

#02112A

Tritanopia (blue-blind)

#06151B

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #100f2b;
/* rgb */ color: rgb(16, 15, 43);
/* oklch */ color: oklch(18.8% 0.055 281.3);

Tailwind

colors: {
  custom: {
    50: '#504d64',
    500: '#100f2b',
    950: '#000000',
  },
}

SCSS

$custom: #100f2b;
$custom-light: #504d64;
$custom-dark: #000000;

JSON

{
  "hex": "#100f2b",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 43
  },
  "hsl": {
    "h": 242.143,
    "s": 48.276,
    "l": 11.373
  },
  "oklch": {
    "l": 0.18848,
    "c": 0.05506,
    "h": 281.3
  },
  "luminance": 0.00626
}

Semantic roles & 50–950 ramp

primary

#100F2B

secondary

#626432

accent

#D850D3

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020105

muted

#78777A

Preview Lab

Preview with #100F2B

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

Preview Lab → · Contrast checker → · Palette generator →