#18404C#18404C

#18404C is a dark, muted cyan. Relative luminance 0.044; OKLCH L 34.9% C 0.049 H 220.6°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#18404C
RGB	rgb(24, 64, 76)
HSL	hsl(194, 52%, 20%)
HSV	hsv(194, 68%, 30%)
CMYK	cmyk(68.4%, 15.8%, 0%, 70.2%)
CIE-LAB	lab(24.90, -9.71, -11.46)
CIE-LCH	lch(24.90, 15.02, 229.72°)
OKLab	oklab(34.87% -0.0372 -0.0319)
OKLCH	oklch(34.87% 0.049 220.6)
XYZ	xyz(3.5141, 4.3824, 7.4968)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18404C #4C2418

analogous

#184C3E #18404C #18264C

triadic

#18404C #4C1840 #404C18

tetradic

#18404C #3E184C #4C2418 #264C18

square

#18404C #3E184C #4C2418 #264C18

split-complementary

#18404C #4C1826 #4C3E18

monochromatic

#071417 #09191D #18404C #27677B #358EA9

Accessibility & contrast

On white

11.19

#18404C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#18404C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18404C

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18404C	#FFFFFF	#000000	##FFFFFF
##18404C	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393E4D

Deuteranopia (green-blind)

#31394C

Tritanopia (blue-blind)

#004444

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #18404c;
/* rgb */ color: rgb(24, 64, 76);
/* oklch */ color: oklch(34.9% 0.049 220.6);

Tailwind

colors: {
  custom: {
    50: '#5c747e',
    500: '#18404c',
    950: '#000000',
  },
}

SCSS

$custom: #18404c;
$custom-light: #5c747e;
$custom-dark: #000000;

JSON

{
  "hex": "#18404c",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 76
  },
  "hsl": {
    "h": 193.846,
    "s": 52,
    "l": 19.608
  },
  "oklch": {
    "l": 0.34866,
    "c": 0.04898,
    "h": 220.6
  },
  "luminance": 0.04383
}

Semantic roles & 50–950 ramp

primary

#18404C

secondary

#834D3D

accent

#6D4CDB

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #18404C

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

Preview Lab → · Contrast checker → · Palette generator →