#18405D#18405D

#18405D is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 35.8% C 0.067 H 243.3°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#18405D
RGB	rgb(24, 64, 93)
HSL	hsl(205, 59%, 23%)
HSV	hsv(205, 74%, 36%)
CMYK	cmyk(74.2%, 31.2%, 0%, 63.5%)
CIE-LAB	lab(25.72, -3.25, -21.31)
CIE-LCH	lch(25.72, 21.56, 261.33°)
OKLab	oklab(35.79% -0.0302 -0.0602)
OKLCH	oklch(35.79% 0.067 243.3)
XYZ	xyz(4.1851, 4.6508, 11.0309)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18405D #5D3518

analogous

#185D57 #18405D #181E5D

triadic

#18405D #5D1840 #405D18

tetradic

#18405D #57185D #5D3518 #1E5D18

square

#18405D #57185D #5D3518 #1E5D18

split-complementary

#18405D #5D181E #5D5718

monochromatic

#061118 #0B1F2C #18405D #25618E #3183BE

Accessibility & contrast

On white

10.88

#18405D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#18405D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18405D

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18405D	#FFFFFF	#000000	##FFFFFF
##18405D	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33415E

Deuteranopia (green-blind)

#293A5C

Tritanopia (blue-blind)

#00474A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #18405d;
/* rgb */ color: rgb(24, 64, 93);
/* oklch */ color: oklch(35.8% 0.067 243.3);

Tailwind

colors: {
  custom: {
    50: '#5e748b',
    500: '#18405d',
    950: '#000000',
  },
}

SCSS

$custom: #18405d;
$custom-light: #5e748b;
$custom-dark: #000000;

JSON

{
  "hex": "#18405d",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 93
  },
  "hsl": {
    "h": 205.217,
    "s": 58.974,
    "l": 22.941
  },
  "oklch": {
    "l": 0.35787,
    "c": 0.06735,
    "h": 243.3
  },
  "luminance": 0.04651
}

Semantic roles & 50–950 ramp

primary

#18405D

secondary

#93623D

accent

#8746E2

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #18405D

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

Preview Lab → · Contrast checker → · Palette generator →