#18517D#18517D

#18517D is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.1% C 0.093 H 246.2°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#18517D
RGB	rgb(24, 81, 125)
HSL	hsl(206, 68%, 29%)
HSV	hsv(206, 81%, 49%)
CMYK	cmyk(80.8%, 35.2%, 0%, 51%)
CIE-LAB	lab(33.05, -1.63, -30.04)
CIE-LCH	lch(33.05, 30.09, 266.89°)
OKLab	oklab(42.14% -0.0376 -0.0854)
OKLCH	oklch(42.14% 0.093 246.2)
XYZ	xyz(7.0194, 7.5589, 20.4871)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18517D #7D4418

analogous

#187D77 #18517D #181E7D

triadic

#18517D #7D1851 #517D18

tetradic

#18517D #77187D #7D4418 #1E7D18

square

#18517D #77187D #7D4418 #1E7D18

split-complementary

#18517D #7D181E #7D7718

monochromatic

#05111A #0E304A #18517D #2272B0 #3792D9

Accessibility & contrast

On white

8.36

#18517D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#18517D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18517D

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18517D	#FFFFFF	#000000	##FFFFFF
##18517D	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D537F

Deuteranopia (green-blind)

#2E4A7C

Tritanopia (blue-blind)

#005C61

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #18517d;
/* rgb */ color: rgb(24, 81, 125);
/* oklch */ color: oklch(42.1% 0.093 246.2);

Tailwind

colors: {
  custom: {
    50: '#6681a3',
    500: '#18517d',
    950: '#000000',
  },
}

SCSS

$custom: #18517d;
$custom-light: #6681a3;
$custom-dark: #000000;

JSON

{
  "hex": "#18517d",
  "rgb": {
    "r": 24,
    "g": 81,
    "b": 125
  },
  "hsl": {
    "h": 206.139,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.42141,
    "c": 0.0933,
    "h": 246.2
  },
  "luminance": 0.0756
}

Semantic roles & 50–950 ramp

primary

#18517D

secondary

#B2713F

accent

#893DEB

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #18517D

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

Preview Lab → · Contrast checker → · Palette generator →