#18577C#18577C

#18577C is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.6% C 0.087 H 239.6°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#18577C
RGB	rgb(24, 87, 124)
HSL	hsl(202, 68%, 29%)
HSV	hsv(202, 81%, 49%)
CMYK	cmyk(80.6%, 29.8%, 0%, 51.4%)
CIE-LAB	lab(34.93, -5.83, -26.45)
CIE-LCH	lch(34.93, 27.09, 257.57°)
OKLab	oklab(43.61% -0.0439 -0.0748)
OKLCH	oklch(43.61% 0.087 239.6)
XYZ	xyz(7.4215, 8.4649, 20.3076)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18577C #7C3D18

analogous

#187C6F #18577C #18257C

triadic

#18577C #7C1857 #577C18

tetradic

#18577C #6F187C #7C3D18 #257C18

square

#18577C #6F187C #7C3D18 #257C18

split-complementary

#18577C #7C1825 #7C6F18

monochromatic

#05121A #0E3349 #18577C #227BAF #369CD8

Accessibility & contrast

On white

7.80

#18577C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#18577C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18577C

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18577C	#FFFFFF	#000000	##FFFFFF
##18577C	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46577E

Deuteranopia (green-blind)

#384E7B

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #18577c;
/* rgb */ color: rgb(24, 87, 124);
/* oklch */ color: oklch(43.6% 0.087 239.6);

Tailwind

colors: {
  custom: {
    50: '#6686a2',
    500: '#18577c',
    950: '#000000',
  },
}

SCSS

$custom: #18577c;
$custom-light: #6686a2;
$custom-dark: #000000;

JSON

{
  "hex": "#18577c",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 124
  },
  "hsl": {
    "h": 202.2,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.43615,
    "c": 0.08678,
    "h": 239.6
  },
  "luminance": 0.08466
}

Semantic roles & 50–950 ramp

primary

#18577C

secondary

#B1693F

accent

#7D3DEA

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #18577C

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

Preview Lab → · Contrast checker → · Palette generator →