#18539E#18539E

#18539E is a dark, vivid cyan. Relative luminance 0.088; OKLCH L 44.9% C 0.136 H 256.7°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#18539E
RGB	rgb(24, 83, 158)
HSL	hsl(214, 74%, 36%)
HSV	hsv(214, 85%, 62%)
CMYK	cmyk(84.8%, 47.5%, 0%, 38%)
CIE-LAB	lab(35.69, 10.37, -45.95)
CIE-LCH	lch(35.69, 47.11, 282.71°)
OKLab	oklab(44.86% -0.0313 -0.1321)
OKLCH	oklch(44.86% 0.136 256.7)
XYZ	xyz(9.6392, 8.8481, 33.5409)
Luminance	0.0885 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18539E #9E6318

analogous

#18969E #18539E #20189E

triadic

#18539E #9E1853 #539E18

tetradic

#18539E #9E1896 #9E6318 #189E20

square

#18539E #9E1896 #9E6318 #189E20

split-complementary

#18539E #9E2018 #969E18

monochromatic

#081B34 #103769 #18539E #206FD3 #4D8FE4

Accessibility & contrast

On white

7.58

#18539E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#18539E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18539E

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18539E	#FFFFFF	#000000	##FFFFFF
##18539E	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#295AA1

Deuteranopia (green-blind)

#004E9D

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #18539e;
/* rgb */ color: rgb(24, 83, 158);
/* oklch */ color: oklch(44.9% 0.136 256.7);

Tailwind

colors: {
  custom: {
    50: '#6e82bb',
    500: '#18539e',
    950: '#000000',
  },
}

SCSS

$custom: #18539e;
$custom-light: #6e82bb;
$custom-dark: #000000;

JSON

{
  "hex": "#18539e",
  "rgb": {
    "r": 24,
    "g": 83,
    "b": 158
  },
  "hsl": {
    "h": 213.582,
    "s": 73.626,
    "l": 35.686
  },
  "oklch": {
    "l": 0.44858,
    "c": 0.13573,
    "h": 256.7
  },
  "luminance": 0.08849
}

Semantic roles & 50–950 ramp

primary

#18539E

secondary

#C6904C

accent

#9F38F0

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #18539E

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

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