#121C43#121C43

#121C43 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.3% C 0.075 H 269.3°. Best body text is #FFFFFF at 16.50:1 contrast (WCAG AA passes).

Color values

HEX	#121C43
RGB	rgb(18, 28, 67)
HSL	hsl(228, 58%, 17%)
HSV	hsv(228, 73%, 26%)
CMYK	cmyk(73.1%, 58.2%, 0%, 73.7%)
CIE-LAB	lab(11.72, 10.71, -26.07)
CIE-LCH	lch(11.72, 28.19, 292.33°)
OKLab	oklab(24.29% -0.0009 -0.0748)
OKLCH	oklch(24.29% 0.075 269.3)
XYZ	xyz(1.6775, 1.3642, 5.4840)
Luminance	0.0136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C43 #433912

analogous

#123543 #121C43 #211243

triadic

#121C43 #43121C #1C4312

tetradic

#121C43 #431235 #433912 #124321

square

#121C43 #431235 #433912 #124321

split-complementary

#121C43 #432112 #354312

monochromatic

#060A18 #060A18 #121C43 #1F3073 #2C44A3

Accessibility & contrast

On white

16.50

#121C43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#121C43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C43

16.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C43	#FFFFFF	#000000	##FFFFFF
##121C43	1.00	16.50	1.27	16.50
#FFFFFF	16.50	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#052144

Deuteranopia (green-blind)

#001D42

Tritanopia (blue-blind)

#00252C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #121c43;
/* rgb */ color: rgb(18, 28, 67);
/* oklch */ color: oklch(24.3% 0.075 269.3);

Tailwind

colors: {
  custom: {
    50: '#565777',
    500: '#121c43',
    950: '#000000',
  },
}

SCSS

$custom: #121c43;
$custom-light: #565777;
$custom-dark: #000000;

JSON

{
  "hex": "#121c43",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 67
  },
  "hsl": {
    "h": 227.755,
    "s": 57.647,
    "l": 16.667
  },
  "oklch": {
    "l": 0.24292,
    "c": 0.07481,
    "h": 269.3
  },
  "luminance": 0.01364
}

Semantic roles & 50–950 ramp

primary

#121C43

secondary

#7C6E35

accent

#C147E1

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030309

muted

#78787B

Preview Lab

Preview with #121C43

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

Preview Lab → · Contrast checker → · Palette generator →