#121843#121843

#121843 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.3% C 0.081 H 272.5°. Best body text is #FFFFFF at 16.97:1 contrast (WCAG AA passes).

Color values

HEX	#121843
RGB	rgb(18, 24, 67)
HSL	hsl(233, 58%, 17%)
HSV	hsv(233, 73%, 26%)
CMYK	cmyk(73.1%, 64.2%, 0%, 73.7%)
CIE-LAB	lab(10.46, 13.79, -28.10)
CIE-LCH	lch(10.46, 31.31, 296.14°)
OKLab	oklab(23.35% 0.0035 -0.0808)
OKLCH	oklch(23.35% 0.081 272.5)
XYZ	xyz(1.5889, 1.1870, 5.4545)
Luminance	0.0119 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121843 #433D12

analogous

#123143 #121843 #251243

triadic

#121843 #431218 #184312

tetradic

#121843 #431231 #433D12 #124325

square

#121843 #431231 #433D12 #124325

split-complementary

#121843 #432512 #314312

monochromatic

#060918 #060918 #121843 #1F2973 #2C3BA3

Accessibility & contrast

On white

16.97

#121843 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#121843 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121843

16.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121843	#FFFFFF	#000000	##FFFFFF
##121843	1.00	16.97	1.24	16.97
#FFFFFF	16.97	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F44

Deuteranopia (green-blind)

#001A42

Tritanopia (blue-blind)

#00222A

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #121843;
/* rgb */ color: rgb(18, 24, 67);
/* oklch */ color: oklch(23.3% 0.081 272.5);

Tailwind

colors: {
  custom: {
    50: '#575477',
    500: '#121843',
    950: '#000000',
  },
}

SCSS

$custom: #121843;
$custom-light: #575477;
$custom-dark: #000000;

JSON

{
  "hex": "#121843",
  "rgb": {
    "r": 18,
    "g": 24,
    "b": 67
  },
  "hsl": {
    "h": 232.653,
    "s": 57.647,
    "l": 16.667
  },
  "oklch": {
    "l": 0.23348,
    "c": 0.08092,
    "h": 272.5
  },
  "luminance": 0.01187
}

Semantic roles & 50–950 ramp

primary

#121843

secondary

#7C7335

accent

#CE47E1

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030209

muted

#78787B

Preview Lab

Preview with #121843

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

Preview Lab → · Contrast checker → · Palette generator →