#121D3A#121D3A

#121D3A is a very dark, muted blue. Relative luminance 0.013; OKLCH L 23.8% C 0.058 H 266.4°. Best body text is #FFFFFF at 16.63:1 contrast (WCAG AA passes).

Color values

HEX	#121D3A
RGB	rgb(18, 29, 58)
HSL	hsl(224, 53%, 15%)
HSV	hsv(224, 69%, 23%)
CMYK	cmyk(69%, 50%, 0%, 77.3%)
CIE-LAB	lab(11.36, 6.12, -20.28)
CIE-LCH	lch(11.36, 21.19, 286.80°)
OKLab	oklab(23.8% -0.0036 -0.0578)
OKLCH	oklch(23.8% 0.058 266.4)
XYZ	xyz(1.4523, 1.3127, 4.1790)
Luminance	0.0131 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121D3A #3A2F12

analogous

#12313A #121D3A #1B123A

triadic

#121D3A #3A121D #1D3A12

tetradic

#121D3A #3A1231 #3A2F12 #123A1B

square

#121D3A #3A1231 #3A2F12 #123A1B

split-complementary

#121D3A #3A1B12 #313A12

monochromatic

#070C17 #070C17 #121D3A #203469 #2F4C97

Accessibility & contrast

On white

16.63

#121D3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#121D3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121D3A

16.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121D3A	#FFFFFF	#000000	##FFFFFF
##121D3A	1.00	16.63	1.26	16.63
#FFFFFF	16.63	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10203B

Deuteranopia (green-blind)

#0A1D39

Tritanopia (blue-blind)

#002328

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #121d3a;
/* rgb */ color: rgb(18, 29, 58);
/* oklch */ color: oklch(23.8% 0.058 266.4);

Tailwind

colors: {
  custom: {
    50: '#545870',
    500: '#121d3a',
    950: '#000000',
  },
}

SCSS

$custom: #121d3a;
$custom-light: #545870;
$custom-dark: #000000;

JSON

{
  "hex": "#121d3a",
  "rgb": {
    "r": 18,
    "g": 29,
    "b": 58
  },
  "hsl": {
    "h": 223.5,
    "s": 52.632,
    "l": 14.902
  },
  "oklch": {
    "l": 0.23803,
    "c": 0.05788,
    "h": 266.4
  },
  "luminance": 0.01313
}

Semantic roles & 50–950 ramp

primary

#121D3A

secondary

#736235

accent

#B44CDC

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #121D3A

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

Preview Lab → · Contrast checker → · Palette generator →