#18304B#18304B

#18304B is a dark, muted cyan. Relative luminance 0.028; OKLCH L 30.4% C 0.058 H 252.7°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#18304B
RGB	rgb(24, 48, 75)
HSL	hsl(212, 52%, 19%)
HSV	hsv(212, 68%, 29%)
CMYK	cmyk(68%, 36%, 0%, 70.6%)
CIE-LAB	lab(19.29, 0.51, -19.49)
CIE-LCH	lch(19.29, 19.50, 271.49°)
OKLab	oklab(30.4% -0.0172 -0.0551)
OKLCH	oklch(30.4% 0.058 252.7)
XYZ	xyz(2.7032, 2.8158, 7.0563)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18304B #4B3318

analogous

#184A4B #18304B #1A184B

triadic

#18304B #4B1830 #304B18

tetradic

#18304B #4B184A #4B3318 #184B1A

square

#18304B #4B184A #4B3318 #184B1A

split-complementary

#18304B #4B1A18 #4A4B18

monochromatic

#070F17 #09121D #18304B #274E79 #366BA8

Accessibility & contrast

On white

13.43

#18304B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#18304B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18304B

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18304B	#FFFFFF	#000000	##FFFFFF
##18304B	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25314C

Deuteranopia (green-blind)

#1E2D4A

Tritanopia (blue-blind)

#00363A

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #18304b;
/* rgb */ color: rgb(24, 48, 75);
/* oklch */ color: oklch(30.4% 0.058 252.7);

Tailwind

colors: {
  custom: {
    50: '#5a687d',
    500: '#18304b',
    950: '#000000',
  },
}

SCSS

$custom: #18304b;
$custom-light: #5a687d;
$custom-dark: #000000;

JSON

{
  "hex": "#18304b",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 75
  },
  "hsl": {
    "h": 211.765,
    "s": 51.515,
    "l": 19.412
  },
  "oklch": {
    "l": 0.30405,
    "c": 0.05768,
    "h": 252.7
  },
  "luminance": 0.02816
}

Semantic roles & 50–950 ramp

primary

#18304B

secondary

#82613D

accent

#984DDB

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#040609

muted

#797A7B

Preview Lab

Preview with #18304B

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

Preview Lab → · Contrast checker → · Palette generator →