#121F59#121F59

#121F59 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.0% C 0.106 H 268.6°. Best body text is #FFFFFF at 15.37:1 contrast (WCAG AA passes).

Color values

HEX	#121F59
RGB	rgb(18, 31, 89)
HSL	hsl(229, 66%, 21%)
HSV	hsv(229, 80%, 35%)
CMYK	cmyk(79.8%, 65.2%, 0%, 65.1%)
CIE-LAB	lab(14.57, 17.77, -36.53)
CIE-LCH	lch(14.57, 40.62, 295.95°)
OKLab	oklab(27.03% -0.0027 -0.1055)
OKLCH	oklch(27.03% 0.106 268.6)
XYZ	xyz(2.5420, 1.8296, 9.6684)
Luminance	0.0183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F59 #594C12

analogous

#124259 #121F59 #281259

triadic

#121F59 #59121F #1F5912

tetradic

#121F59 #591242 #594C12 #125928

square

#121F59 #591242 #594C12 #125928

split-complementary

#121F59 #592812 #425912

monochromatic

#050919 #080D26 #121F59 #1C318C #2742BF

Accessibility & contrast

On white

15.37

#121F59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#121F59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F59

15.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F59	#FFFFFF	#000000	##FFFFFF
##121F59	1.00	15.37	1.37	15.37
#FFFFFF	15.37	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285B

Deuteranopia (green-blind)

#002258

Tritanopia (blue-blind)

#002E38

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #121f59;
/* rgb */ color: rgb(18, 31, 89);
/* oklch */ color: oklch(27.0% 0.106 268.6);

Tailwind

colors: {
  custom: {
    50: '#5c5a88',
    500: '#121f59',
    950: '#000000',
  },
}

SCSS

$custom: #121f59;
$custom-light: #5c5a88;
$custom-dark: #000000;

JSON

{
  "hex": "#121f59",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 89
  },
  "hsl": {
    "h": 229.014,
    "s": 66.355,
    "l": 20.98
  },
  "oklch": {
    "l": 0.27034,
    "c": 0.10552,
    "h": 268.6
  },
  "luminance": 0.0183
}

Semantic roles & 50–950 ramp

primary

#121F59

secondary

#928135

accent

#CA3FE9

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #121F59

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

Preview Lab → · Contrast checker → · Palette generator →