#121C51#121C51

#121C51 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.6% C 0.097 H 269.9°. Best body text is #FFFFFF at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#121C51
RGB	rgb(18, 28, 81)
HSL	hsl(230, 64%, 19%)
HSV	hsv(230, 78%, 32%)
CMYK	cmyk(77.8%, 65.4%, 0%, 68.2%)
CIE-LAB	lab(12.94, 16.65, -33.76)
CIE-LCH	lch(12.94, 37.64, 296.25°)
OKLab	oklab(25.6% -0.0002 -0.0974)
OKLCH	oklch(25.6% 0.097 269.9)
XYZ	xyz(2.1494, 1.5530, 7.9695)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.66

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121C51 #514712

analogous

#123C51 #121C51 #281251

triadic

#121C51 #51121C #1C5112

tetradic

#121C51 #51123C #514712 #125128

square

#121C51 #51123C #514712 #125128

split-complementary

#121C51 #512812 #3C5112

monochromatic

#060919 #070B1F #121C51 #1D2D83 #283FB5

Accessibility & contrast

On white

16.02

#121C51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#121C51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121C51

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121C51	#FFFFFF	#000000	##FFFFFF
##121C51	1.00	16.02	1.31	16.02
#FFFFFF	16.02	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002453

Deuteranopia (green-blind)

#001F50

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #121c51;
/* rgb */ color: rgb(18, 28, 81);
/* oklch */ color: oklch(25.6% 0.097 269.9);

Tailwind

colors: {
  custom: {
    50: '#5a5782',
    500: '#121c51',
    950: '#000000',
  },
}

SCSS

$custom: #121c51;
$custom-light: #5a5782;
$custom-dark: #000000;

JSON

{
  "hex": "#121c51",
  "rgb": {
    "r": 18,
    "g": 28,
    "b": 81
  },
  "hsl": {
    "h": 230.476,
    "s": 63.636,
    "l": 19.412
  },
  "oklch": {
    "l": 0.25595,
    "c": 0.09741,
    "h": 269.9
  },
  "luminance": 0.01553
}

Semantic roles & 50–950 ramp

primary

#121C51

secondary

#8A7C35

accent

#CC41E7

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #121C51

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

Preview Lab → · Contrast checker → · Palette generator →