#12102B#12102B

#12102B is a very dark, muted blue. Relative luminance 0.007; OKLCH L 19.3% C 0.053 H 283.6°. Best body text is #FFFFFF at 18.51:1 contrast (WCAG AA passes).

Color values

HEX	#12102B
RGB	rgb(18, 16, 43)
HSL	hsl(244, 46%, 12%)
HSV	hsv(244, 63%, 17%)
CMYK	cmyk(58.1%, 62.8%, 0%, 83.1%)
CIE-LAB	lab(6.08, 9.43, -17.76)
CIE-LCH	lch(6.08, 20.11, 297.96°)
OKLab	oklab(19.29% 0.0124 -0.0514)
OKLCH	oklch(19.29% 0.053 283.6)
XYZ	xyz(0.8707, 0.6736, 2.3692)
Luminance	0.0067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.13

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12102B #292B10

analogous

#101C2B #12102B #20102B

triadic

#12102B #2B1210 #102B12

tetradic

#12102B #2B101C #292B10 #102B20

square

#12102B #2B101C #292B10 #102B20

split-complementary

#12102B #2B2010 #1C2B10

monochromatic

#090816 #090816 #12102B #252158 #373184

Accessibility & contrast

On white

18.51

#12102B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#12102B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12102B

18.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12102B	#FFFFFF	#000000	##FFFFFF
##12102B	1.00	18.51	1.13	18.51
#FFFFFF	18.51	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05142C

Deuteranopia (green-blind)

#04132A

Tritanopia (blue-blind)

#09161B

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #12102b;
/* rgb */ color: rgb(18, 16, 43);
/* oklch */ color: oklch(19.3% 0.053 283.6);

Tailwind

colors: {
  custom: {
    50: '#514e64',
    500: '#12102b',
    950: '#000000',
  },
}

SCSS

$custom: #12102b;
$custom-light: #514e64;
$custom-dark: #000000;

JSON

{
  "hex": "#12102b",
  "rgb": {
    "r": 18,
    "g": 16,
    "b": 43
  },
  "hsl": {
    "h": 244.444,
    "s": 45.763,
    "l": 11.569
  },
  "oklch": {
    "l": 0.19293,
    "c": 0.05289,
    "h": 283.6
  },
  "luminance": 0.00674
}

Semantic roles & 50–950 ramp

primary

#12102B

secondary

#606433

accent

#D552CC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020105

muted

#78777A

Preview Lab

Preview with #12102B

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

Preview Lab → · Contrast checker → · Palette generator →