#10102B#10102B

#10102B is a very dark, muted blue. Relative luminance 0.007; OKLCH L 19.1% C 0.053 H 280.1°. Best body text is #FFFFFF at 18.57:1 contrast (WCAG AA passes).

Color values

HEX	#10102B
RGB	rgb(16, 16, 43)
HSL	hsl(240, 46%, 12%)
HSV	hsv(240, 63%, 17%)
CMYK	cmyk(62.8%, 62.8%, 0%, 83.1%)
CIE-LAB	lab(5.92, 8.69, -18.03)
CIE-LCH	lch(5.92, 20.02, 295.74°)
OKLab	oklab(19.09% 0.0093 -0.0524)
OKLCH	oklch(19.09% 0.053 280.1)
XYZ	xyz(0.8349, 0.6551, 2.3675)
Luminance	0.0066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.95

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10102B #2B2B10

analogous

#101E2B #10102B #1E102B

triadic

#10102B #2B1010 #102B10

tetradic

#10102B #2B101E #2B2B10 #102B1E

square

#10102B #2B101E #2B2B10 #102B1E

split-complementary

#10102B #2B1E10 #1E2B10

monochromatic

#080816 #080816 #10102B #212158 #313184

Accessibility & contrast

On white

18.57

#10102B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#10102B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10102B

18.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10102B	#FFFFFF	#000000	##FFFFFF
##10102B	1.00	18.57	1.13	18.57
#FFFFFF	18.57	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04142C

Deuteranopia (green-blind)

#03122A

Tritanopia (blue-blind)

#06161B

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #10102b;
/* rgb */ color: rgb(16, 16, 43);
/* oklch */ color: oklch(19.1% 0.053 280.1);

Tailwind

colors: {
  custom: {
    50: '#504e64',
    500: '#10102b',
    950: '#000000',
  },
}

SCSS

$custom: #10102b;
$custom-light: #504e64;
$custom-dark: #000000;

JSON

{
  "hex": "#10102b",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 43
  },
  "hsl": {
    "h": 240,
    "s": 45.763,
    "l": 11.569
  },
  "oklch": {
    "l": 0.19091,
    "c": 0.05328,
    "h": 280.1
  },
  "luminance": 0.00655
}

Semantic roles & 50–950 ramp

primary

#10102B

secondary

#646433

accent

#D552D5

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020105

muted

#78777A

Preview Lab

Preview with #10102B

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

Preview Lab → · Contrast checker → · Palette generator →