#18517B#18517B

#18517B is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.0% C 0.091 H 245.1°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#18517B
RGB	rgb(24, 81, 123)
HSL	hsl(205, 67%, 29%)
HSV	hsv(205, 80%, 48%)
CMYK	cmyk(80.5%, 34.1%, 0%, 51.8%)
CIE-LAB	lab(32.94, -2.43, -28.97)
CIE-LCH	lch(32.94, 29.08, 265.21°)
OKLab	oklab(42.02% -0.0382 -0.0823)
OKLCH	oklch(42.02% 0.091 245.1)
XYZ	xyz(6.8929, 7.5083, 19.8210)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18517B #7B4218

analogous

#187B74 #18517B #181F7B

triadic

#18517B #7B1851 #517B18

tetradic

#18517B #74187B #7B4218 #1F7B18

square

#18517B #74187B #7B4218 #1F7B18

split-complementary

#18517B #7B181F #7B7418

monochromatic

#05111A #0E2F48 #18517B #2273AE #3693D8

Accessibility & contrast

On white

8.39

#18517B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#18517B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18517B

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18517B	#FFFFFF	#000000	##FFFFFF
##18517B	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E527D

Deuteranopia (green-blind)

#30497A

Tritanopia (blue-blind)

#005B60

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #18517b;
/* rgb */ color: rgb(24, 81, 123);
/* oklch */ color: oklch(42.0% 0.091 245.1);

Tailwind

colors: {
  custom: {
    50: '#6581a1',
    500: '#18517b',
    950: '#000000',
  },
}

SCSS

$custom: #18517b;
$custom-light: #6581a1;
$custom-dark: #000000;

JSON

{
  "hex": "#18517b",
  "rgb": {
    "r": 24,
    "g": 81,
    "b": 123
  },
  "hsl": {
    "h": 205.455,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.42019,
    "c": 0.09073,
    "h": 245.1
  },
  "luminance": 0.07509
}

Semantic roles & 50–950 ramp

primary

#18517B

secondary

#B06F3F

accent

#873EEA

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0F

muted

#7A7C7E

Preview Lab

Preview with #18517B

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

Preview Lab → · Contrast checker → · Palette generator →