#12102A#12102A

#12102A is a very dark, muted blue. Relative luminance 0.007; OKLCH L 19.2% C 0.051 H 284.0°. Best body text is #FFFFFF at 18.53:1 contrast (WCAG AA passes).

Color values

HEX	#12102A
RGB	rgb(18, 16, 42)
HSL	hsl(245, 45%, 11%)
HSV	hsv(245, 62%, 16%)
CMYK	cmyk(57.1%, 61.9%, 0%, 83.5%)
CIE-LAB	lab(6.02, 8.98, -17.11)
CIE-LCH	lch(6.02, 19.32, 297.68°)
OKLab	oklab(19.21% 0.0123 -0.0496)
OKLCH	oklch(19.21% 0.051 284)
XYZ	xyz(0.8525, 0.6663, 2.2737)
Luminance	0.0067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.49

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12102A #282A10

analogous

#101B2A #12102A #1F102A

triadic

#12102A #2A1210 #102A12

tetradic

#12102A #2A101B #282A10 #102A1F

square

#12102A #2A101B #282A10 #102A1F

split-complementary

#12102A #2A1F10 #1B2A10

monochromatic

#090816 #090816 #12102A #252156 #383283

Accessibility & contrast

On white

18.53

#12102A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#12102A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12102A

18.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12102A	#FFFFFF	#000000	##FFFFFF
##12102A	1.00	18.53	1.13	18.53
#FFFFFF	18.53	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05142B

Deuteranopia (green-blind)

#051229

Tritanopia (blue-blind)

#0A161B

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #12102a;
/* rgb */ color: rgb(18, 16, 42);
/* oklch */ color: oklch(19.2% 0.051 284.0);

Tailwind

colors: {
  custom: {
    50: '#514e63',
    500: '#12102a',
    950: '#000000',
  },
}

SCSS

$custom: #12102a;
$custom-light: #514e63;
$custom-dark: #000000;

JSON

{
  "hex": "#12102a",
  "rgb": {
    "r": 18,
    "g": 16,
    "b": 42
  },
  "hsl": {
    "h": 244.615,
    "s": 44.828,
    "l": 11.373
  },
  "oklch": {
    "l": 0.19208,
    "c": 0.05107,
    "h": 284
  },
  "luminance": 0.00666
}

Semantic roles & 50–950 ramp

primary

#12102A

secondary

#5F6233

accent

#D553CB

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#020105

muted

#787779

Preview Lab

Preview with #12102A

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

Preview Lab → · Contrast checker → · Palette generator →