#18517F#18517F

#18517F is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.3% C 0.096 H 247.3°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#18517F
RGB	rgb(24, 81, 127)
HSL	hsl(207, 68%, 30%)
HSV	hsv(207, 81%, 50%)
CMYK	cmyk(81.1%, 36.2%, 0%, 50.2%)
CIE-LAB	lab(33.16, -0.83, -31.10)
CIE-LCH	lch(33.16, 31.11, 268.46°)
OKLab	oklab(42.27% -0.037 -0.0885)
OKLCH	oklch(42.27% 0.096 247.3)
XYZ	xyz(7.1484, 7.6105, 21.1668)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18517F #7F4618

analogous

#187F7A #18517F #181E7F

triadic

#18517F #7F1851 #517F18

tetradic

#18517F #7A187F #7F4618 #1E7F18

square

#18517F #7A187F #7F4618 #1E7F18

split-complementary

#18517F #7F181E #7F7A18

monochromatic

#05101A #0E304C #18517F #2272B2 #3891D9

Accessibility & contrast

On white

8.33

#18517F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#18517F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18517F

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18517F	#FFFFFF	#000000	##FFFFFF
##18517F	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C5381

Deuteranopia (green-blind)

#2D4A7E

Tritanopia (blue-blind)

#005C62

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #18517f;
/* rgb */ color: rgb(24, 81, 127);
/* oklch */ color: oklch(42.3% 0.096 247.3);

Tailwind

colors: {
  custom: {
    50: '#6681a4',
    500: '#18517f',
    950: '#000000',
  },
}

SCSS

$custom: #18517f;
$custom-light: #6681a4;
$custom-dark: #000000;

JSON

{
  "hex": "#18517f",
  "rgb": {
    "r": 24,
    "g": 81,
    "b": 127
  },
  "hsl": {
    "h": 206.796,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.42265,
    "c": 0.09592,
    "h": 247.3
  },
  "luminance": 0.07611
}

Semantic roles & 50–950 ramp

primary

#18517F

secondary

#B3733F

accent

#8B3DEB

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #18517F

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

Preview Lab → · Contrast checker → · Palette generator →