#18405C#18405C

#18405C is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.066 H 242.4°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#18405C
RGB	rgb(24, 64, 92)
HSL	hsl(205, 59%, 23%)
HSV	hsv(205, 74%, 36%)
CMYK	cmyk(73.9%, 30.4%, 0%, 63.9%)
CIE-LAB	lab(25.66, -3.64, -20.74)
CIE-LCH	lch(25.66, 21.06, 260.04°)
OKLab	oklab(35.73% -0.0306 -0.0585)
OKLCH	oklch(35.73% 0.066 242.4)
XYZ	xyz(4.1411, 4.6332, 10.7992)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18405C #5C3418

analogous

#185C56 #18405C #181E5C

triadic

#18405C #5C1840 #405C18

tetradic

#18405C #56185C #5C3418 #1E5C18

square

#18405C #56185C #5C3418 #1E5C18

split-complementary

#18405C #5C181E #5C5618

monochromatic

#061118 #0B1E2B #18405C #25628D #3184BD

Accessibility & contrast

On white

10.90

#18405C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#18405C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18405C

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18405C	#FFFFFF	#000000	##FFFFFF
##18405C	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33405D

Deuteranopia (green-blind)

#2A3A5B

Tritanopia (blue-blind)

#00474A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #18405c;
/* rgb */ color: rgb(24, 64, 92);
/* oklch */ color: oklch(35.7% 0.066 242.4);

Tailwind

colors: {
  custom: {
    50: '#5e748a',
    500: '#18405c',
    950: '#000000',
  },
}

SCSS

$custom: #18405c;
$custom-light: #5e748a;
$custom-dark: #000000;

JSON

{
  "hex": "#18405c",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 92
  },
  "hsl": {
    "h": 204.706,
    "s": 58.621,
    "l": 22.745
  },
  "oklch": {
    "l": 0.35728,
    "c": 0.06606,
    "h": 242.4
  },
  "luminance": 0.04634
}

Semantic roles & 50–950 ramp

primary

#18405C

secondary

#93603D

accent

#8646E2

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #18405C

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

Preview Lab → · Contrast checker → · Palette generator →