#121C5A#121C5A

#121C5A is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.111 H 269.8°. Best body text is #FFFFFF at 15.68:1 contrast (WCAG AA passes).

Color values

HEX	#121C5A
RGB	rgb(18, 28, 90)
HSL	hsl(232, 67%, 21%)
HSV	hsv(232, 80%, 35%)
CMYK	cmyk(80%, 68.9%, 0%, 64.7%)
CIE-LAB	lab(13.81, 20.40, -38.44)
CIE-LCH	lch(13.81, 43.51, 297.95°)
OKLab	oklab(26.51% -0.0004 -0.1111)
OKLCH	oklch(26.51% 0.111 269.8)
XYZ	xyz(2.5095, 1.6970, 9.8662)
Luminance	0.0170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C5A #5A5012

analogous

#12405A #121C5A #2C125A

triadic

#121C5A #5A121C #1C5A12

tetradic

#121C5A #5A1240 #5A5012 #125A2C

square

#121C5A #5A1240 #5A5012 #125A2C

split-complementary

#121C5A #5A2C12 #405A12

monochromatic

#05081A #080C27 #121C5A #1C2C8D #263CC0

Accessibility & contrast

On white

15.68

#121C5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#121C5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C5A

15.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C5A	#FFFFFF	#000000	##FFFFFF
##121C5A	1.00	15.68	1.34	15.68
#FFFFFF	15.68	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275C

Deuteranopia (green-blind)

#002059

Tritanopia (blue-blind)

#002C38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #121c5a;
/* rgb */ color: rgb(18, 28, 90);
/* oklch */ color: oklch(26.5% 0.111 269.8);

Tailwind

colors: {
  custom: {
    50: '#5d5889',
    500: '#121c5a',
    950: '#000000',
  },
}

SCSS

$custom: #121c5a;
$custom-light: #5d5889;
$custom-dark: #000000;

JSON

{
  "hex": "#121c5a",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 90
  },
  "hsl": {
    "h": 231.667,
    "s": 66.667,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26505,
    "c": 0.11112,
    "h": 269.8
  },
  "luminance": 0.01697
}

Semantic roles & 50–950 ramp

primary

#121C5A

secondary

#938635

accent

#D23EEA

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #121C5A

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

Preview Lab → · Contrast checker → · Palette generator →