#18577A#18577A

#18577A is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.5% C 0.084 H 238.1°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#18577A
RGB	rgb(24, 87, 122)
HSL	hsl(201, 67%, 29%)
HSV	hsv(201, 80%, 48%)
CMYK	cmyk(80.3%, 28.7%, 0%, 52.2%)
CIE-LAB	lab(34.83, -6.60, -25.38)
CIE-LCH	lch(34.83, 26.22, 255.41°)
OKLab	oklab(43.5% -0.0446 -0.0717)
OKLCH	oklch(43.5% 0.084 238.1)
XYZ	xyz(7.2963, 8.4148, 19.6483)
Luminance	0.0842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18577A #7A3B18

analogous

#187A6C #18577A #18267A

triadic

#18577A #7A1857 #577A18

tetradic

#18577A #6C187A #7A3B18 #267A18

square

#18577A #6C187A #7A3B18 #267A18

split-complementary

#18577A #7A1826 #7A6C18

monochromatic

#05121A #0E3347 #18577A #227BAD #359DD7

Accessibility & contrast

On white

7.83

#18577A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#18577A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18577A

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18577A	#FFFFFF	#000000	##FFFFFF
##18577A	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46577C

Deuteranopia (green-blind)

#394E79

Tritanopia (blue-blind)

#006063

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #18577a;
/* rgb */ color: rgb(24, 87, 122);
/* oklch */ color: oklch(43.5% 0.084 238.1);

Tailwind

colors: {
  custom: {
    50: '#6586a0',
    500: '#18577a',
    950: '#000000',
  },
}

SCSS

$custom: #18577a;
$custom-light: #6586a0;
$custom-dark: #000000;

JSON

{
  "hex": "#18577a",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 122
  },
  "hsl": {
    "h": 201.429,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.43502,
    "c": 0.08447,
    "h": 238.1
  },
  "luminance": 0.08416
}

Semantic roles & 50–950 ramp

primary

#18577A

secondary

#AF673F

accent

#7B3EEA

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0E

muted

#7A7C7E

Preview Lab

Preview with #18577A

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

Preview Lab → · Contrast checker → · Palette generator →