#18517C#18517C

#18517C is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.1% C 0.092 H 245.7°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#18517C
RGB	rgb(24, 81, 124)
HSL	hsl(206, 68%, 29%)
HSV	hsv(206, 81%, 49%)
CMYK	cmyk(80.6%, 34.7%, 0%, 51.4%)
CIE-LAB	lab(32.99, -2.03, -29.51)
CIE-LCH	lch(32.99, 29.58, 266.06°)
OKLab	oklab(42.08% -0.0379 -0.0838)
OKLCH	oklch(42.08% 0.092 245.7)
XYZ	xyz(6.9558, 7.5335, 20.1524)
Luminance	0.0753 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18517C #7C4318

analogous

#187C75 #18517C #181F7C

triadic

#18517C #7C1851 #517C18

tetradic

#18517C #75187C #7C4318 #1F7C18

square

#18517C #75187C #7C4318 #1F7C18

split-complementary

#18517C #7C181F #7C7518

monochromatic

#05111A #0E3049 #18517C #2272AF #3693D8

Accessibility & contrast

On white

8.38

#18517C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#18517C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18517C

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18517C	#FFFFFF	#000000	##FFFFFF
##18517C	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D537E

Deuteranopia (green-blind)

#2F497B

Tritanopia (blue-blind)

#005B60

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #18517c;
/* rgb */ color: rgb(24, 81, 124);
/* oklch */ color: oklch(42.1% 0.092 245.7);

Tailwind

colors: {
  custom: {
    50: '#6581a2',
    500: '#18517c',
    950: '#000000',
  },
}

SCSS

$custom: #18517c;
$custom-light: #6581a2;
$custom-dark: #000000;

JSON

{
  "hex": "#18517c",
  "rgb": {
    "r": 24,
    "g": 81,
    "b": 124
  },
  "hsl": {
    "h": 205.8,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.4208,
    "c": 0.09202,
    "h": 245.7
  },
  "luminance": 0.07534
}

Semantic roles & 50–950 ramp

primary

#18517C

secondary

#B1703F

accent

#883DEA

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#060A0F

muted

#7A7C7F

Preview Lab

Preview with #18517C

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

Preview Lab → · Contrast checker → · Palette generator →