#18306D#18306D

#18306D is a dark, moderate blue. Relative luminance 0.034; OKLCH L 33.0% C 0.110 H 264.8°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX	#18306D
RGB	rgb(24, 48, 109)
HSL	hsl(223, 64%, 26%)
HSV	hsv(223, 78%, 43%)
CMYK	cmyk(78%, 56%, 0%, 57.3%)
CIE-LAB	lab(21.62, 14.50, -38.20)
CIE-LCH	lch(21.62, 40.86, 290.79°)
OKLab	oklab(32.95% -0.0101 -0.11)
OKLCH	oklch(32.95% 0.11 264.8)
XYZ	xyz(4.1930, 3.4118, 14.9026)
Luminance	0.0341 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18306D #6D5518

analogous

#185A6D #18306D #2A186D

triadic

#18306D #6D1830 #306D18

tetradic

#18306D #6D185A #6D5518 #186D2A

square

#18306D #6D185A #6D5518 #186D2A

split-complementary

#18306D #6D2A18 #5A6D18

monochromatic

#060B19 #0D1A3B #18306D #23469F #2E5CD1

Accessibility & contrast

On white

12.48

#18306D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#18306D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18306D

12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18306D	#FFFFFF	#000000	##FFFFFF
##18306D	1.00	12.48	1.68	12.48
#FFFFFF	12.48	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04386F

Deuteranopia (green-blind)

#00306C

Tritanopia (blue-blind)

#003F49

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #18306d;
/* rgb */ color: rgb(24, 48, 109);
/* oklch */ color: oklch(33.0% 0.110 264.8);

Tailwind

colors: {
  custom: {
    50: '#626797',
    500: '#18306d',
    950: '#000000',
  },
}

SCSS

$custom: #18306d;
$custom-light: #626797;
$custom-dark: #000000;

JSON

{
  "hex": "#18306d",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 109
  },
  "hsl": {
    "h": 223.059,
    "s": 63.91,
    "l": 26.078
  },
  "oklch": {
    "l": 0.32952,
    "c": 0.11046,
    "h": 264.8
  },
  "luminance": 0.03412
}

Semantic roles & 50–950 ramp

primary

#18306D

secondary

#A3863E

accent

#B841E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #18306D

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

Preview Lab → · Contrast checker → · Palette generator →