#121F53#121F53

#121F53 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.096 H 268.3°. Best body text is #FFFFFF at 15.59:1 contrast (WCAG AA passes).

Color values

HEX	#121F53
RGB	rgb(18, 31, 83)
HSL	hsl(228, 64%, 20%)
HSV	hsv(228, 78%, 33%)
CMYK	cmyk(78.3%, 62.7%, 0%, 67.5%)
CIE-LAB	lab(14.02, 15.24, -33.37)
CIE-LCH	lch(14.02, 36.68, 294.54°)
OKLab	oklab(26.46% -0.0028 -0.0962)
OKLCH	oklch(26.46% 0.096 268.3)
XYZ	xyz(2.3002, 1.7329, 8.3952)
Luminance	0.0173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F53 #534612

analogous

#124053 #121F53 #261253

triadic

#121F53 #53121F #1F5312

tetradic

#121F53 #531240 #534612 #125326

square

#121F53 #531240 #534612 #125326

split-complementary

#121F53 #532612 #405312

monochromatic

#050919 #070C21 #121F53 #1D3285 #2845B8

Accessibility & contrast

On white

15.59

#121F53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#121F53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F53

15.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F53	#FFFFFF	#000000	##FFFFFF
##121F53	1.00	15.59	1.35	15.59
#FFFFFF	15.59	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002755

Deuteranopia (green-blind)

#002152

Tritanopia (blue-blind)

#002C35

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #121f53;
/* rgb */ color: rgb(18, 31, 83);
/* oklch */ color: oklch(26.5% 0.096 268.3);

Tailwind

colors: {
  custom: {
    50: '#5b5a84',
    500: '#121f53',
    950: '#000000',
  },
}

SCSS

$custom: #121f53;
$custom-light: #5b5a84;
$custom-dark: #000000;

JSON

{
  "hex": "#121f53",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 83
  },
  "hsl": {
    "h": 228,
    "s": 64.356,
    "l": 19.804
  },
  "oklch": {
    "l": 0.26455,
    "c": 0.09625,
    "h": 268.3
  },
  "luminance": 0.01733
}

Semantic roles & 50–950 ramp

primary

#121F53

secondary

#8C7A35

accent

#C640E7

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #121F53

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

Preview Lab → · Contrast checker → · Palette generator →