#18599E#18599E

#18599E is a mid, vivid cyan. Relative luminance 0.098; OKLCH L 46.3% C 0.129 H 253.7°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#18599E
RGB	rgb(24, 89, 158)
HSL	hsl(211, 74%, 36%)
HSV	hsv(211, 85%, 62%)
CMYK	cmyk(84.8%, 43.7%, 0%, 38%)
CIE-LAB	lab(37.49, 6.40, -43.06)
CIE-LCH	lch(37.49, 43.53, 278.45°)
OKLab	oklab(46.25% -0.0361 -0.1234)
OKLCH	oklch(46.25% 0.129 253.7)
XYZ	xyz(10.1183, 9.8063, 33.7006)
Luminance	0.0981 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18599E #9E5D18

analogous

#189C9E #18599E #1A189E

triadic

#18599E #9E1859 #599E18

tetradic

#18599E #9E189C #9E5D18 #189E1A

square

#18599E #9E189C #9E5D18 #189E1A

split-complementary

#18599E #9E1A18 #9C9E18

monochromatic

#081D34 #103B69 #18599E #2077D3 #4D96E4

Accessibility & contrast

On white

7.09

#18599E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#18599E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18599E

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18599E	#FFFFFF	#000000	##FFFFFF
##18599E	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365FA1

Deuteranopia (green-blind)

#1C539D

Tritanopia (blue-blind)

#006A73

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #18599e;
/* rgb */ color: rgb(24, 89, 158);
/* oklch */ color: oklch(46.3% 0.129 253.7);

Tailwind

colors: {
  custom: {
    50: '#6d87bb',
    500: '#18599e',
    950: '#000000',
  },
}

SCSS

$custom: #18599e;
$custom-light: #6d87bb;
$custom-dark: #000000;

JSON

{
  "hex": "#18599e",
  "rgb": {
    "r": 24,
    "g": 89,
    "b": 158
  },
  "hsl": {
    "h": 210.896,
    "s": 73.626,
    "l": 35.686
  },
  "oklch": {
    "l": 0.46254,
    "c": 0.1286,
    "h": 253.7
  },
  "luminance": 0.09808
}

Semantic roles & 50–950 ramp

primary

#18599E

secondary

#C68B4C

accent

#9738F0

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #18599E

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

Preview Lab → · Contrast checker → · Palette generator →