#18538B#18538B

#18538B is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.5% C 0.110 H 251.1°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#18538B
RGB	rgb(24, 83, 139)
HSL	hsl(209, 71%, 32%)
HSV	hsv(209, 83%, 55%)
CMYK	cmyk(82.7%, 40.3%, 0%, 45.5%)
CIE-LAB	lab(34.49, 2.68, -36.37)
CIE-LCH	lch(34.49, 36.47, 274.21°)
OKLab	oklab(43.53% -0.0355 -0.1039)
OKLCH	oklch(43.53% 0.11 251.1)
XYZ	xyz(8.1284, 8.2438, 25.5839)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18538B #8B5018

analogous

#188B8A #18538B #181A8B

triadic

#18538B #8B1853 #538B18

tetradic

#18538B #8A188B #8B5018 #1A8B18

square

#18538B #8A188B #8B5018 #1A8B18

split-complementary

#18538B #8B181A #8B8A18

monochromatic

#061523 #0F3457 #18538B #2172BF #3F91DE

Accessibility & contrast

On white

7.93

#18538B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#18538B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18538B

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18538B	#FFFFFF	#000000	##FFFFFF
##18538B	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38578D

Deuteranopia (green-blind)

#264C8A

Tritanopia (blue-blind)

#006068

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #18538b;
/* rgb */ color: rgb(24, 83, 139);
/* oklch */ color: oklch(43.5% 0.110 251.1);

Tailwind

colors: {
  custom: {
    50: '#6982ad',
    500: '#18538b',
    950: '#000000',
  },
}

SCSS

$custom: #18538b;
$custom-light: #6982ad;
$custom-dark: #000000;

JSON

{
  "hex": "#18538b",
  "rgb": {
    "r": 24,
    "g": 83,
    "b": 139
  },
  "hsl": {
    "h": 209.217,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.43533,
    "c": 0.1098,
    "h": 251.1
  },
  "luminance": 0.08245
}

Semantic roles & 50–950 ramp

primary

#18538B

secondary

#BE7E40

accent

#923AED

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #18538B

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

Preview Lab → · Contrast checker → · Palette generator →