#18599F#18599F

#18599F is a mid, vivid cyan. Relative luminance 0.098; OKLCH L 46.3% C 0.130 H 254.0°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#18599F
RGB	rgb(24, 89, 159)
HSL	hsl(211, 74%, 36%)
HSV	hsv(211, 85%, 62%)
CMYK	cmyk(84.9%, 44%, 0%, 37.6%)
CIE-LAB	lab(37.56, 6.80, -43.56)
CIE-LCH	lch(37.56, 44.08, 278.87°)
OKLab	oklab(46.32% -0.0359 -0.1249)
OKLCH	oklch(46.32% 0.13 254)
XYZ	xyz(10.2047, 9.8409, 34.1558)
Luminance	0.0984 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18599F #9F5E18

analogous

#189C9F #18599F #1A189F

triadic

#18599F #9F1859 #599F18

tetradic

#18599F #9F189C #9F5E18 #189F1A

square

#18599F #9F189C #9F5E18 #189F1A

split-complementary

#18599F #9F1A18 #9C9F18

monochromatic

#081D35 #103B6A #18599F #2077D4 #4D96E4

Accessibility & contrast

On white

7.07

#18599F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#18599F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18599F

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18599F	#FFFFFF	#000000	##FFFFFF
##18599F	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355FA2

Deuteranopia (green-blind)

#1A539E

Tritanopia (blue-blind)

#006A74

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #18599f;
/* rgb */ color: rgb(24, 89, 159);
/* oklch */ color: oklch(46.3% 0.130 254.0);

Tailwind

colors: {
  custom: {
    50: '#6e87bc',
    500: '#18599f',
    950: '#000000',
  },
}

SCSS

$custom: #18599f;
$custom-light: #6e87bc;
$custom-dark: #000000;

JSON

{
  "hex": "#18599f",
  "rgb": {
    "r": 24,
    "g": 89,
    "b": 159
  },
  "hsl": {
    "h": 211.111,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.46324,
    "c": 0.12995,
    "h": 254
  },
  "luminance": 0.09842
}

Semantic roles & 50–950 ramp

primary

#18599F

secondary

#C68C4D

accent

#9737F0

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #18599F

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

Preview Lab → · Contrast checker → · Palette generator →