#121553#121553

#121553 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.4% C 0.110 H 272.7°. Best body text is #FFFFFF at 16.70:1 contrast (WCAG AA passes).

Color values

HEX	#121553
RGB	rgb(18, 21, 83)
HSL	hsl(237, 64%, 20%)
HSV	hsv(237, 78%, 33%)
CMYK	cmyk(78.3%, 74.7%, 0%, 67.5%)
CIE-LAB	lab(11.20, 22.58, -37.98)
CIE-LCH	lch(11.20, 44.18, 300.73°)
OKLab	oklab(24.38% 0.0052 -0.1098)
OKLCH	oklch(24.38% 0.11 272.7)
XYZ	xyz(2.0784, 1.2893, 8.3213)
Luminance	0.0129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121553 #535012

analogous

#123553 #121553 #301253

triadic

#121553 #531215 #155312

tetradic

#121553 #531235 #535012 #125330

square

#121553 #531235 #535012 #125330

split-complementary

#121553 #533012 #355312

monochromatic

#050619 #070821 #121553 #1D2285 #282EB8

Accessibility & contrast

On white

16.70

#121553 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#121553 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121553

16.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121553	#FFFFFF	#000000	##FFFFFF
##121553	1.00	16.70	1.26	16.70
#FFFFFF	16.70	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002155

Deuteranopia (green-blind)

#001B52

Tritanopia (blue-blind)

#002632

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #121553;
/* rgb */ color: rgb(18, 21, 83);
/* oklch */ color: oklch(24.4% 0.110 272.7);

Tailwind

colors: {
  custom: {
    50: '#5c5284',
    500: '#121553',
    950: '#000000',
  },
}

SCSS

$custom: #121553;
$custom-light: #5c5284;
$custom-dark: #000000;

JSON

{
  "hex": "#121553",
  "rgb": {
    "r": 18,
    "g": 21,
    "b": 83
  },
  "hsl": {
    "h": 237.231,
    "s": 64.356,
    "l": 19.804
  },
  "oklch": {
    "l": 0.24381,
    "c": 0.10993,
    "h": 272.7
  },
  "luminance": 0.01289
}

Semantic roles & 50–950 ramp

primary

#121553

secondary

#8C8835

accent

#E040E7

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#04020B

muted

#79787C

Preview Lab

Preview with #121553

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

Preview Lab → · Contrast checker → · Palette generator →