#121C55#121C55

#121C55 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.0% C 0.104 H 269.9°. Best body text is #FFFFFF at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#121C55
RGB	rgb(18, 28, 85)
HSL	hsl(231, 65%, 20%)
HSV	hsv(231, 79%, 33%)
CMYK	cmyk(78.8%, 67.1%, 0%, 66.7%)
CIE-LAB	lab(13.32, 18.32, -35.86)
CIE-LCH	lch(13.32, 40.27, 297.06°)
OKLab	oklab(25.99% -0.0002 -0.1036)
OKLCH	oklch(25.99% 0.104 269.9)
XYZ	xyz(2.3038, 1.6147, 8.7828)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C55 #554B12

analogous

#123D55 #121C55 #2A1255

triadic

#121C55 #55121C #1C5512

tetradic

#121C55 #55123D #554B12 #12552A

square

#121C55 #55123D #554B12 #12552A

split-complementary

#121C55 #552A12 #3D5512

monochromatic

#050819 #070B22 #121C55 #1D2D88 #273DBA

Accessibility & contrast

On white

15.87

#121C55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#121C55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C55

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C55	#FFFFFF	#000000	##FFFFFF
##121C55	1.00	15.87	1.32	15.87
#FFFFFF	15.87	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002557

Deuteranopia (green-blind)

#001F54

Tritanopia (blue-blind)

#002B35

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #121c55;
/* rgb */ color: rgb(18, 28, 85);
/* oklch */ color: oklch(26.0% 0.104 269.9);

Tailwind

colors: {
  custom: {
    50: '#5b5885',
    500: '#121c55',
    950: '#000000',
  },
}

SCSS

$custom: #121c55;
$custom-light: #5b5885;
$custom-dark: #000000;

JSON

{
  "hex": "#121c55",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 85
  },
  "hsl": {
    "h": 231.045,
    "s": 65.049,
    "l": 20.196
  },
  "oklch": {
    "l": 0.25993,
    "c": 0.10358,
    "h": 269.9
  },
  "luminance": 0.01615
}

Semantic roles & 50–950 ramp

primary

#121C55

secondary

#8E8135

accent

#CF40E8

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #121C55

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

Preview Lab → · Contrast checker → · Palette generator →