#121A3F#121A3F

#121A3F is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.5% C 0.071 H 270.8°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#121A3F
RGB	rgb(18, 26, 63)
HSL	hsl(229, 56%, 16%)
HSV	hsv(229, 71%, 25%)
CMYK	cmyk(71.4%, 58.7%, 0%, 75.3%)
CIE-LAB	lab(10.75, 10.56, -24.82)
CIE-LCH	lch(10.75, 26.97, 293.05°)
OKLab	oklab(23.46% 0.001 -0.0711)
OKLCH	oklch(23.46% 0.071 270.8)
XYZ	xyz(1.5158, 1.2261, 4.8585)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121A3F #3F3712

analogous

#12303F #121A3F #20123F

triadic

#121A3F #3F121A #1A3F12

tetradic

#121A3F #3F1230 #3F3712 #123F20

square

#121A3F #3F1230 #3F3712 #123F20

split-complementary

#121A3F #3F2012 #303F12

monochromatic

#070A18 #070A18 #121A3F #202E6F #2D419E

Accessibility & contrast

On white

16.86

#121A3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#121A3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121A3F

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121A3F	#FFFFFF	#000000	##FFFFFF
##121A3F	1.00	16.86	1.25	16.86
#FFFFFF	16.86	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#051F40

Deuteranopia (green-blind)

#001B3E

Tritanopia (blue-blind)

#002329

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #121a3f;
/* rgb */ color: rgb(18, 26, 63);
/* oklch */ color: oklch(23.5% 0.071 270.8);

Tailwind

colors: {
  custom: {
    50: '#565674',
    500: '#121a3f',
    950: '#000000',
  },
}

SCSS

$custom: #121a3f;
$custom-light: #565674;
$custom-dark: #000000;

JSON

{
  "hex": "#121a3f",
  "rgb": {
    "r": 18,
    "g": 26,
    "b": 63
  },
  "hsl": {
    "h": 229.333,
    "s": 55.556,
    "l": 15.882
  },
  "oklch": {
    "l": 0.23456,
    "c": 0.07115,
    "h": 270.8
  },
  "luminance": 0.01226
}

Semantic roles & 50–950 ramp

primary

#121A3F

secondary

#786C35

accent

#C449DF

background

#F5F5F7

surface

#E9E8ED

border

#C5C4C8

text

#030308

muted

#78787B

Preview Lab

Preview with #121A3F

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

Preview Lab → · Contrast checker → · Palette generator →