#18557A#18557A

#18557A is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.0% C 0.086 H 240.3°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#18557A
RGB	rgb(24, 85, 122)
HSL	hsl(203, 67%, 29%)
HSV	hsv(203, 80%, 48%)
CMYK	cmyk(80.3%, 30.3%, 0%, 52.2%)
CIE-LAB	lab(34.18, -5.36, -26.40)
CIE-LCH	lch(34.18, 26.94, 258.53°)
OKLab	oklab(42.99% -0.0426 -0.0747)
OKLCH	oklch(42.99% 0.086 240.3)
XYZ	xyz(7.1367, 8.0955, 19.5950)
Luminance	0.0810 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18557A #7A3D18

analogous

#187A6E #18557A #18247A

triadic

#18557A #7A1855 #557A18

tetradic

#18557A #6E187A #7A3D18 #247A18

square

#18557A #6E187A #7A3D18 #247A18

split-complementary

#18557A #7A1824 #7A6E18

monochromatic

#05121A #0E3147 #18557A #2279AD #359AD7

Accessibility & contrast

On white

8.02

#18557A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#18557A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18557A

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18557A	#FFFFFF	#000000	##FFFFFF
##18557A	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#44557C

Deuteranopia (green-blind)

#364C79

Tritanopia (blue-blind)

#005E62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #18557a;
/* rgb */ color: rgb(24, 85, 122);
/* oklch */ color: oklch(43.0% 0.086 240.3);

Tailwind

colors: {
  custom: {
    50: '#6584a0',
    500: '#18557a',
    950: '#000000',
  },
}

SCSS

$custom: #18557a;
$custom-light: #6584a0;
$custom-dark: #000000;

JSON

{
  "hex": "#18557a",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 122
  },
  "hsl": {
    "h": 202.653,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.42985,
    "c": 0.086,
    "h": 240.3
  },
  "luminance": 0.08096
}

Semantic roles & 50–950 ramp

primary

#18557A

secondary

#AF693F

accent

#7F3EEA

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0F

muted

#7A7C7E

Preview Lab

Preview with #18557A

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

Preview Lab → · Contrast checker → · Palette generator →