#12123C#12123C

#12123C is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.3% C 0.079 H 277.4°. Best body text is #FFFFFF at 17.84:1 contrast (WCAG AA passes).

Color values

HEX	#12123C
RGB	rgb(18, 18, 60)
HSL	hsl(240, 54%, 15%)
HSV	hsv(240, 70%, 24%)
CMYK	cmyk(70%, 70%, 0%, 76.5%)
CIE-LAB	lab(8.02, 15.48, -27.11)
CIE-LCH	lch(8.02, 31.22, 299.72°)
OKLab	oklab(21.33% 0.0101 -0.078)
OKLCH	oklch(21.33% 0.079 277.4)
XYZ	xyz(1.2811, 0.8874, 4.3779)
Luminance	0.0089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12123C #3C3C12

analogous

#12273C #12123C #27123C

triadic

#12123C #3C1212 #123C12

tetradic

#12123C #3C1227 #3C3C12 #123C27

square

#12123C #3C1227 #3C3C12 #123C27

split-complementary

#12123C #3C2712 #273C12

monochromatic

#070718 #070718 #12123C #20206B #2E2E9A

Accessibility & contrast

On white

17.84

#12123C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#12123C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12123C

17.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12123C	#FFFFFF	#000000	##FFFFFF
##12123C	1.00	17.84	1.18	17.84
#FFFFFF	17.84	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193D

Deuteranopia (green-blind)

#00163B

Tritanopia (blue-blind)

#001C24

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #12123c;
/* rgb */ color: rgb(18, 18, 60);
/* oklch */ color: oklch(21.3% 0.079 277.4);

Tailwind

colors: {
  custom: {
    50: '#564f72',
    500: '#12123c',
    950: '#000000',
  },
}

SCSS

$custom: #12123c;
$custom-light: #564f72;
$custom-dark: #000000;

JSON

{
  "hex": "#12123c",
  "rgb": {
    "r": 18,
    "g": 18,
    "b": 60
  },
  "hsl": {
    "h": 240,
    "s": 53.846,
    "l": 15.294
  },
  "oklch": {
    "l": 0.21333,
    "c": 0.07864,
    "h": 277.4
  },
  "luminance": 0.00887
}

Semantic roles & 50–950 ramp

primary

#12123C

secondary

#757535

accent

#DD4BDD

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #12123C

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

Preview Lab → · Contrast checker → · Palette generator →