#121E4B#121E4B

#121E4B is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.5% C 0.085 H 268.5°. Best body text is #FFFFFF at 15.99:1 contrast (WCAG AA passes).

Color values

HEX	#121E4B
RGB	rgb(18, 30, 75)
HSL	hsl(227, 61%, 18%)
HSV	hsv(227, 76%, 29%)
CMYK	cmyk(76%, 60%, 0%, 70.6%)
CIE-LAB	lab(13.02, 12.59, -29.53)
CIE-LCH	lch(13.02, 32.10, 293.09°)
OKLab	oklab(25.48% -0.0023 -0.0849)
OKLCH	oklch(25.48% 0.085 268.5)
XYZ	xyz(1.9833, 1.5650, 6.8528)
Luminance	0.0157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121E4B #4B3F12

analogous

#123A4B #121E4B #22124B

triadic

#121E4B #4B121E #1E4B12

tetradic

#121E4B #4B123A #4B3F12 #124B22

square

#121E4B #4B123A #4B3F12 #124B22

split-complementary

#121E4B #4B2212 #3A4B12

monochromatic

#060A19 #060A1A #121E4B #1E327C #2A45AE

Accessibility & contrast

On white

15.99

#121E4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#121E4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121E4B

15.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121E4B	#FFFFFF	#000000	##FFFFFF
##121E4B	1.00	15.99	1.31	15.99
#FFFFFF	15.99	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	15.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01244D

Deuteranopia (green-blind)

#001F4A

Tritanopia (blue-blind)

#002931

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #121e4b;
/* rgb */ color: rgb(18, 30, 75);
/* oklch */ color: oklch(25.5% 0.085 268.5);

Tailwind

colors: {
  custom: {
    50: '#58597e',
    500: '#121e4b',
    950: '#000000',
  },
}

SCSS

$custom: #121e4b;
$custom-light: #58597e;
$custom-dark: #000000;

JSON

{
  "hex": "#121e4b",
  "rgb": {
    "r": 18,
    "g": 30,
    "b": 75
  },
  "hsl": {
    "h": 227.368,
    "s": 61.29,
    "l": 18.235
  },
  "oklch": {
    "l": 0.25483,
    "c": 0.08497,
    "h": 268.5
  },
  "luminance": 0.01565
}

Semantic roles & 50–950 ramp

primary

#121E4B

secondary

#847335

accent

#C343E4

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #121E4B

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

Preview Lab → · Contrast checker → · Palette generator →