#18343B#18343B

#18343B is a dark, muted cyan. Relative luminance 0.030; OKLCH L 30.6% C 0.036 H 216.0°. Best body text is #FFFFFF at 13.18:1 contrast (WCAG AA passes).

Color values

HEX	#18343B
RGB	rgb(24, 52, 59)
HSL	hsl(192, 42%, 16%)
HSV	hsv(192, 59%, 23%)
CMYK	cmyk(59.3%, 11.9%, 0%, 76.9%)
CIE-LAB	lab(19.91, -8.21, -7.66)
CIE-LCH	lch(19.91, 11.23, 223.05°)
OKLab	oklab(30.63% -0.0292 -0.0212)
OKLCH	oklch(30.63% 0.036 216)
XYZ	xyz(2.3938, 2.9657, 4.5831)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18343B #3B1F18

analogous

#183B31 #18343B #18233B

triadic

#18343B #3B1834 #343B18

tetradic

#18343B #31183B #3B1F18 #233B18

square

#18343B #31183B #3B1F18 #233B18

split-complementary

#18343B #3B1823 #3B3118

monochromatic

#091316 #091316 #18343B #2A5A67 #3B8192

Accessibility & contrast

On white

13.18

#18343B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#18343B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18343B

13.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18343B	#FFFFFF	#000000	##FFFFFF
##18343B	1.00	13.18	1.59	13.18
#FFFFFF	13.18	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F323B

Deuteranopia (green-blind)

#2A2E3B

Tritanopia (blue-blind)

#033736

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #18343b;
/* rgb */ color: rgb(24, 52, 59);
/* oklch */ color: oklch(30.6% 0.036 216.0);

Tailwind

colors: {
  custom: {
    50: '#586b70',
    500: '#18343b',
    950: '#000000',
  },
}

SCSS

$custom: #18343b;
$custom-light: #586b70;
$custom-dark: #000000;

JSON

{
  "hex": "#18343b",
  "rgb": {
    "r": 24,
    "g": 52,
    "b": 59
  },
  "hsl": {
    "h": 192,
    "s": 42.169,
    "l": 16.275
  },
  "oklch": {
    "l": 0.30632,
    "c": 0.03607,
    "h": 216
  },
  "luminance": 0.02966
}

Semantic roles & 50–950 ramp

primary

#18343B

secondary

#71483E

accent

#6F56D2

background

#F5F6F6

surface

#E9EBEC

border

#C5C6C7

text

#030607

muted

#787A7A

Preview Lab

Preview with #18343B

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

Preview Lab → · Contrast checker → · Palette generator →