#121F4F#121F4F

#121F4F is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.1% C 0.090 H 268.1°. Best body text is #FFFFFF at 15.74:1 contrast (WCAG AA passes).

Color values

HEX	#121F4F
RGB	rgb(18, 31, 79)
HSL	hsl(227, 63%, 19%)
HSV	hsv(227, 77%, 31%)
CMYK	cmyk(77.2%, 60.8%, 0%, 69%)
CIE-LAB	lab(13.67, 13.53, -31.21)
CIE-LCH	lch(13.67, 34.02, 293.44°)
OKLab	oklab(26.08% -0.003 -0.0899)
OKLCH	oklch(26.08% 0.09 268.1)
XYZ	xyz(2.1502, 1.6729, 7.6052)
Luminance	0.0167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121F4F #4F4212

analogous

#123E4F #121F4F #24124F

triadic

#121F4F #4F121F #1F4F12

tetradic

#121F4F #4F123E #4F4212 #124F24

square

#121F4F #4F123E #4F4212 #124F24

split-complementary

#121F4F #4F2412 #3E4F12

monochromatic

#060A19 #070B1D #121F4F #1D3381 #2946B3

Accessibility & contrast

On white

15.74

#121F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#121F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121F4F

15.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121F4F	#FFFFFF	#000000	##FFFFFF
##121F4F	1.00	15.74	1.33	15.74
#FFFFFF	15.74	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002651

Deuteranopia (green-blind)

#00204E

Tritanopia (blue-blind)

#002B33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #121f4f;
/* rgb */ color: rgb(18, 31, 79);
/* oklch */ color: oklch(26.1% 0.090 268.1);

Tailwind

colors: {
  custom: {
    50: '#595a81',
    500: '#121f4f',
    950: '#000000',
  },
}

SCSS

$custom: #121f4f;
$custom-light: #595a81;
$custom-dark: #000000;

JSON

{
  "hex": "#121f4f",
  "rgb": {
    "r": 18,
    "g": 31,
    "b": 79
  },
  "hsl": {
    "h": 227.213,
    "s": 62.887,
    "l": 19.02
  },
  "oklch": {
    "l": 0.26081,
    "c": 0.08993,
    "h": 268.1
  },
  "luminance": 0.01673
}

Semantic roles & 50–950 ramp

primary

#121F4F

secondary

#887635

accent

#C342E6

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #121F4F

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

Preview Lab → · Contrast checker → · Palette generator →