#121C53#121C53

#121C53 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.8% C 0.101 H 269.9°. Best body text is #FFFFFF at 15.95:1 contrast (WCAG AA passes).

Color values

HEX	#121C53
RGB	rgb(18, 28, 83)
HSL	hsl(231, 64%, 20%)
HSV	hsv(231, 78%, 33%)
CMYK	cmyk(78.3%, 66.3%, 0%, 67.5%)
CIE-LAB	lab(13.13, 17.49, -34.82)
CIE-LCH	lch(13.13, 38.96, 296.67°)
OKLab	oklab(25.79% -0.0002 -0.1005)
OKLCH	oklch(25.79% 0.101 269.9)
XYZ	xyz(2.2255, 1.5834, 8.3703)
Luminance	0.0158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C53 #534912

analogous

#123D53 #121C53 #281253

triadic

#121C53 #53121C #1C5312

tetradic

#121C53 #53123D #534912 #125328

square

#121C53 #53123D #534912 #125328

split-complementary

#121C53 #532812 #3D5312

monochromatic

#050819 #070B21 #121C53 #1D2D85 #283EB8

Accessibility & contrast

On white

15.95

#121C53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#121C53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C53

15.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C53	#FFFFFF	#000000	##FFFFFF
##121C53	1.00	15.95	1.32	15.95
#FFFFFF	15.95	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002555

Deuteranopia (green-blind)

#001F52

Tritanopia (blue-blind)

#002A34

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #121c53;
/* rgb */ color: rgb(18, 28, 83);
/* oklch */ color: oklch(25.8% 0.101 269.9);

Tailwind

colors: {
  custom: {
    50: '#5b5784',
    500: '#121c53',
    950: '#000000',
  },
}

SCSS

$custom: #121c53;
$custom-light: #5b5784;
$custom-dark: #000000;

JSON

{
  "hex": "#121c53",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 83
  },
  "hsl": {
    "h": 230.769,
    "s": 64.356,
    "l": 19.804
  },
  "oklch": {
    "l": 0.25793,
    "c": 0.10051,
    "h": 269.9
  },
  "luminance": 0.01584
}

Semantic roles & 50–950 ramp

primary

#121C53

secondary

#8C7E35

accent

#CE40E7

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #121C53

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

Preview Lab → · Contrast checker → · Palette generator →