#18306B#18306B

#18306B is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.8% C 0.107 H 264.5°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#18306B
RGB	rgb(24, 48, 107)
HSL	hsl(223, 63%, 26%)
HSV	hsv(223, 78%, 42%)
CMYK	cmyk(77.6%, 55.1%, 0%, 58%)
CIE-LAB	lab(21.47, 13.67, -37.16)
CIE-LCH	lch(21.47, 39.60, 290.20°)
OKLab	oklab(32.78% -0.0103 -0.1069)
OKLCH	oklch(32.78% 0.107 264.5)
XYZ	xyz(4.0865, 3.3692, 14.3420)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18306B #6B5318

analogous

#18596B #18306B #2A186B

triadic

#18306B #6B1830 #306B18

tetradic

#18306B #6B1859 #6B5318 #186B2A

square

#18306B #6B1859 #6B5318 #186B2A

split-complementary

#18306B #6B2A18 #596B18

monochromatic

#060B19 #0D1A39 #18306B #23469D #2E5DCF

Accessibility & contrast

On white

12.54

#18306B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#18306B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18306B

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18306B	#FFFFFF	#000000	##FFFFFF
##18306B	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08386D

Deuteranopia (green-blind)

#00306A

Tritanopia (blue-blind)

#003E48

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #18306b;
/* rgb */ color: rgb(24, 48, 107);
/* oklch */ color: oklch(32.8% 0.107 264.5);

Tailwind

colors: {
  custom: {
    50: '#626796',
    500: '#18306b',
    950: '#000000',
  },
}

SCSS

$custom: #18306b;
$custom-light: #626796;
$custom-dark: #000000;

JSON

{
  "hex": "#18306b",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 107
  },
  "hsl": {
    "h": 222.651,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.32783,
    "c": 0.10743,
    "h": 264.5
  },
  "luminance": 0.0337
}

Semantic roles & 50–950 ramp

primary

#18306B

secondary

#A1843E

accent

#B741E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #18306B

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

Preview Lab → · Contrast checker → · Palette generator →