#18304D#18304D

#18304D is a dark, moderate cyan. Relative luminance 0.028; OKLCH L 30.5% C 0.061 H 254.2°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#18304D
RGB	rgb(24, 48, 77)
HSL	hsl(213, 52%, 20%)
HSV	hsv(213, 69%, 30%)
CMYK	cmyk(68.8%, 37.7%, 0%, 69.8%)
CIE-LAB	lab(19.41, 1.30, -20.65)
CIE-LCH	lch(19.41, 20.70, 273.61°)
OKLab	oklab(30.53% -0.0165 -0.0585)
OKLCH	oklch(30.53% 0.061 254.2)
XYZ	xyz(2.7727, 2.8437, 7.4225)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18304D #4D3518

analogous

#184B4D #18304D #1B184D

triadic

#18304D #4D1830 #304D18

tetradic

#18304D #4D184B #4D3518 #184D1B

square

#18304D #4D184B #4D3518 #184D1B

split-complementary

#18304D #4D1B18 #4B4D18

monochromatic

#070F17 #09131E #18304D #274D7C #356AAA

Accessibility & contrast

On white

13.39

#18304D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#18304D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18304D

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18304D	#FFFFFF	#000000	##FFFFFF
##18304D	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24324E

Deuteranopia (green-blind)

#1C2D4C

Tritanopia (blue-blind)

#00373B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #18304d;
/* rgb */ color: rgb(24, 48, 77);
/* oklch */ color: oklch(30.5% 0.061 254.2);

Tailwind

colors: {
  custom: {
    50: '#5b687f',
    500: '#18304d',
    950: '#000000',
  },
}

SCSS

$custom: #18304d;
$custom-light: #5b687f;
$custom-dark: #000000;

JSON

{
  "hex": "#18304d",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 77
  },
  "hsl": {
    "h": 212.83,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.30533,
    "c": 0.06076,
    "h": 254.2
  },
  "luminance": 0.02844
}

Semantic roles & 50–950 ramp

primary

#18304D

secondary

#84643D

accent

#9B4CDC

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04060A

muted

#797A7C

Preview Lab

Preview with #18304D

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

Preview Lab → · Contrast checker → · Palette generator →