#18306E#18306E

#18306E is a dark, moderate blue. Relative luminance 0.034; OKLCH L 33.0% C 0.112 H 264.9°. Best body text is #FFFFFF at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#18306E
RGB	rgb(24, 48, 110)
HSL	hsl(223, 64%, 26%)
HSV	hsv(223, 78%, 43%)
CMYK	cmyk(78.2%, 56.4%, 0%, 56.9%)
CIE-LAB	lab(21.70, 14.92, -38.72)
CIE-LCH	lch(21.70, 41.49, 291.07°)
OKLab	oklab(33.04% -0.01 -0.1115)
OKLCH	oklch(33.04% 0.112 264.9)
XYZ	xyz(4.2471, 3.4334, 15.1877)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18306E #6E5618

analogous

#185B6E #18306E #2B186E

triadic

#18306E #6E1830 #306E18

tetradic

#18306E #6E185B #6E5618 #186E2B

square

#18306E #6E185B #6E5618 #186E2B

split-complementary

#18306E #6E2B18 #5B6E18

monochromatic

#050B19 #0D1A3C #18306E #2346A0 #2F5CD2

Accessibility & contrast

On white

12.45

#18306E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#18306E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18306E

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18306E	#FFFFFF	#000000	##FFFFFF
##18306E	1.00	12.45	1.69	12.45
#FFFFFF	12.45	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#023870

Deuteranopia (green-blind)

#00306D

Tritanopia (blue-blind)

#003F4A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #18306e;
/* rgb */ color: rgb(24, 48, 110);
/* oklch */ color: oklch(33.0% 0.112 264.9);

Tailwind

colors: {
  custom: {
    50: '#636798',
    500: '#18306e',
    950: '#000000',
  },
}

SCSS

$custom: #18306e;
$custom-light: #636798;
$custom-dark: #000000;

JSON

{
  "hex": "#18306e",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 110
  },
  "hsl": {
    "h": 223.256,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.33037,
    "c": 0.11197,
    "h": 264.9
  },
  "luminance": 0.03434
}

Semantic roles & 50–950 ramp

primary

#18306E

secondary

#A4873E

accent

#B941E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #18306E

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

Preview Lab → · Contrast checker → · Palette generator →