#18333C#18333C

#18333C is a dark, muted cyan. Relative luminance 0.029; OKLCH L 30.4% C 0.037 H 221.9°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#18333C
RGB	rgb(24, 51, 60)
HSL	hsl(195, 43%, 16%)
HSV	hsv(195, 60%, 24%)
CMYK	cmyk(60%, 15%, 0%, 76.5%)
CIE-LAB	lab(19.59, -7.21, -8.83)
CIE-LCH	lch(19.59, 11.40, 230.77°)
OKLab	oklab(30.39% -0.0273 -0.0245)
OKLCH	oklch(30.39% 0.037 221.9)
XYZ	xyz(2.3758, 2.8879, 4.7063)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18333C #3C2118

analogous

#183C33 #18333C #18213C

triadic

#18333C #3C1833 #333C18

tetradic

#18333C #33183C #3C2118 #213C18

square

#18333C #33183C #3C2118 #213C18

split-complementary

#18333C #3C1821 #3C3318

monochromatic

#091316 #091316 #18333C #295868 #3B7D93

Accessibility & contrast

On white

13.31

#18333C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#18333C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18333C

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18333C	#FFFFFF	#000000	##FFFFFF
##18333C	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E323C

Deuteranopia (green-blind)

#282E3C

Tritanopia (blue-blind)

#033636

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #18333c;
/* rgb */ color: rgb(24, 51, 60);
/* oklch */ color: oklch(30.4% 0.037 221.9);

Tailwind

colors: {
  custom: {
    50: '#586a71',
    500: '#18333c',
    950: '#000000',
  },
}

SCSS

$custom: #18333c;
$custom-light: #586a71;
$custom-dark: #000000;

JSON

{
  "hex": "#18333c",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 60
  },
  "hsl": {
    "h": 195,
    "s": 42.857,
    "l": 16.471
  },
  "oklch": {
    "l": 0.30392,
    "c": 0.03665,
    "h": 221.9
  },
  "luminance": 0.02888
}

Semantic roles & 50–950 ramp

primary

#18333C

secondary

#724B3E

accent

#7555D3

background

#F5F6F6

surface

#E9EBEC

border

#C5C6C7

text

#030607

muted

#787A7A

Preview Lab

Preview with #18333C

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

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