#121558#121558

#121558 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.9% C 0.117 H 272.2°. Best body text is #FFFFFF at 16.48:1 contrast (WCAG AA passes).

Color values

HEX	#121558
RGB	rgb(18, 21, 88)
HSL	hsl(237, 66%, 21%)
HSV	hsv(237, 80%, 35%)
CMYK	cmyk(79.5%, 76.1%, 0%, 65.5%)
CIE-LAB	lab(11.75, 24.55, -40.47)
CIE-LCH	lch(11.75, 47.33, 301.24°)
OKLab	oklab(24.95% 0.0045 -0.1171)
OKLCH	oklch(24.95% 0.117 272.2)
XYZ	xyz(2.2785, 1.3693, 9.3748)
Luminance	0.0137 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121558 #585512

analogous

#123858 #121558 #321258

triadic

#121558 #581215 #155812

tetradic

#121558 #581238 #585512 #125832

square

#121558 #581238 #585512 #125832

split-complementary

#121558 #583212 #385812

monochromatic

#050619 #080925 #121558 #1C218B #272DBE

Accessibility & contrast

On white

16.48

#121558 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#121558 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121558

16.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121558	#FFFFFF	#000000	##FFFFFF
##121558	1.00	16.48	1.27	16.48
#FFFFFF	16.48	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225A

Deuteranopia (green-blind)

#001C57

Tritanopia (blue-blind)

#002834

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #121558;
/* rgb */ color: rgb(18, 21, 88);
/* oklch */ color: oklch(24.9% 0.117 272.2);

Tailwind

colors: {
  custom: {
    50: '#5d5388',
    500: '#121558',
    950: '#000000',
  },
}

SCSS

$custom: #121558;
$custom-light: #5d5388;
$custom-dark: #000000;

JSON

{
  "hex": "#121558",
  "rgb": {
    "r": 18,
    "g": 21,
    "b": 88
  },
  "hsl": {
    "h": 237.429,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.24945,
    "c": 0.11716,
    "h": 272.2
  },
  "luminance": 0.0137
}

Semantic roles & 50–950 ramp

primary

#121558

secondary

#918D35

accent

#E23FE9

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #121558

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

Preview Lab → · Contrast checker → · Palette generator →