#18306C#18306C

#18306C is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.9% C 0.109 H 264.6°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#18306C
RGB	rgb(24, 48, 108)
HSL	hsl(223, 64%, 26%)
HSV	hsv(223, 78%, 42%)
CMYK	cmyk(77.8%, 55.6%, 0%, 57.6%)
CIE-LAB	lab(21.54, 14.09, -37.68)
CIE-LCH	lch(21.54, 40.23, 290.50°)
OKLab	oklab(32.87% -0.0102 -0.1085)
OKLCH	oklch(32.87% 0.109 264.6)
XYZ	xyz(4.1395, 3.3904, 14.6207)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18306C #6C5418

analogous

#185A6C #18306C #2A186C

triadic

#18306C #6C1830 #306C18

tetradic

#18306C #6C185A #6C5418 #186C2A

square

#18306C #6C185A #6C5418 #186C2A

split-complementary

#18306C #6C2A18 #5A6C18

monochromatic

#060B19 #0D1A3A #18306C #23469E #2E5DD0

Accessibility & contrast

On white

12.51

#18306C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#18306C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18306C

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18306C	#FFFFFF	#000000	##FFFFFF
##18306C	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06386E

Deuteranopia (green-blind)

#00306B

Tritanopia (blue-blind)

#003E49

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #18306c;
/* rgb */ color: rgb(24, 48, 108);
/* oklch */ color: oklch(32.9% 0.109 264.6);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#18306c",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 108
  },
  "hsl": {
    "h": 222.857,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.32867,
    "c": 0.10895,
    "h": 264.6
  },
  "luminance": 0.03391
}

Semantic roles & 50–950 ramp

primary

#18306C

secondary

#A2853E

accent

#B741E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #18306C

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

Preview Lab → · Contrast checker → · Palette generator →