#18306F#18306F

#18306F is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.1% C 0.113 H 265.0°. Best body text is #FFFFFF at 12.42:1 contrast (WCAG AA passes).

Color values

HEX	#18306F
RGB	rgb(24, 48, 111)
HSL	hsl(223, 64%, 26%)
HSV	hsv(223, 78%, 44%)
CMYK	cmyk(78.4%, 56.8%, 0%, 56.5%)
CIE-LAB	lab(21.78, 15.33, -39.23)
CIE-LCH	lch(21.78, 42.12, 291.35°)
OKLab	oklab(33.12% -0.0099 -0.113)
OKLCH	oklch(33.12% 0.113 265)
XYZ	xyz(4.3019, 3.4553, 15.4761)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18306F #6F5718

analogous

#185C6F #18306F #2C186F

triadic

#18306F #6F1830 #306F18

tetradic

#18306F #6F185C #6F5718 #186F2C

square

#18306F #6F185C #6F5718 #186F2C

split-complementary

#18306F #6F2C18 #5C6F18

monochromatic

#050B19 #0D1A3D #18306F #2346A1 #2F5CD2

Accessibility & contrast

On white

12.42

#18306F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#18306F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18306F

12.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18306F	#FFFFFF	#000000	##FFFFFF
##18306F	1.00	12.42	1.69	12.42
#FFFFFF	12.42	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003871

Deuteranopia (green-blind)

#00306E

Tritanopia (blue-blind)

#003F4A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #18306f;
/* rgb */ color: rgb(24, 48, 111);
/* oklch */ color: oklch(33.1% 0.113 265.0);

Tailwind

colors: {
  custom: {
    50: '#636799',
    500: '#18306f',
    950: '#000000',
  },
}

SCSS

$custom: #18306f;
$custom-light: #636799;
$custom-dark: #000000;

JSON

{
  "hex": "#18306f",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 111
  },
  "hsl": {
    "h": 223.448,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.33123,
    "c": 0.11346,
    "h": 265
  },
  "luminance": 0.03456
}

Semantic roles & 50–950 ramp

primary

#18306F

secondary

#A5883E

accent

#B940E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #18306F

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

Preview Lab → · Contrast checker → · Palette generator →