#121E3F#121E3F

#121E3F is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.5% C 0.065 H 266.6°. Best body text is #FFFFFF at 16.37:1 contrast (WCAG AA passes).

Color values

HEX	#121E3F
RGB	rgb(18, 30, 63)
HSL	hsl(224, 56%, 16%)
HSV	hsv(224, 71%, 25%)
CMYK	cmyk(71.4%, 52.4%, 0%, 75.3%)
CIE-LAB	lab(12.06, 7.46, -22.71)
CIE-LCH	lch(12.06, 23.90, 288.20°)
OKLab	oklab(24.46% -0.0038 -0.0649)
OKLCH	oklch(24.46% 0.065 266.6)
XYZ	xyz(1.6106, 1.4159, 4.8901)
Luminance	0.0142 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121E3F #3F3312

analogous

#12343F #121E3F #1C123F

triadic

#121E3F #3F121E #1E3F12

tetradic

#121E3F #3F1234 #3F3312 #123F1C

square

#121E3F #3F1234 #3F3312 #123F1C

split-complementary

#121E3F #3F1C12 #343F12

monochromatic

#070B18 #070B18 #121E3F #20356F #2D4B9E

Accessibility & contrast

On white

16.37

#121E3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#121E3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121E3F

16.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121E3F	#FFFFFF	#000000	##FFFFFF
##121E3F	1.00	16.37	1.28	16.37
#FFFFFF	16.37	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E2240

Deuteranopia (green-blind)

#071E3E

Tritanopia (blue-blind)

#00262B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121e3f;
/* rgb */ color: rgb(18, 30, 63);
/* oklch */ color: oklch(24.5% 0.065 266.6);

Tailwind

colors: {
  custom: {
    50: '#555974',
    500: '#121e3f',
    950: '#000000',
  },
}

SCSS

$custom: #121e3f;
$custom-light: #555974;
$custom-dark: #000000;

JSON

{
  "hex": "#121e3f",
  "rgb": {
    "r": 18,
    "g": 30,
    "b": 63
  },
  "hsl": {
    "h": 224,
    "s": 55.556,
    "l": 15.882
  },
  "oklch": {
    "l": 0.24456,
    "c": 0.06498,
    "h": 266.6
  },
  "luminance": 0.01416
}

Semantic roles & 50–950 ramp

primary

#121E3F

secondary

#786635

accent

#B749DF

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #121E3F

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

Preview Lab → · Contrast checker → · Palette generator →