#18597C#18597C

#18597C is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.1% C 0.085 H 237.4°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#18597C
RGB	rgb(24, 89, 124)
HSL	hsl(201, 68%, 29%)
HSV	hsv(201, 81%, 49%)
CMYK	cmyk(80.6%, 28.2%, 0%, 51.4%)
CIE-LAB	lab(35.58, -7.07, -25.44)
CIE-LCH	lch(35.58, 26.40, 254.47°)
OKLab	oklab(44.13% -0.0459 -0.0719)
OKLCH	oklch(44.13% 0.085 237.4)
XYZ	xyz(7.5857, 8.7933, 20.3623)
Luminance	0.0879 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18597C #7C3B18

analogous

#187C6D #18597C #18277C

triadic

#18597C #7C1859 #597C18

tetradic

#18597C #6D187C #7C3B18 #277C18

square

#18597C #6D187C #7C3B18 #277C18

split-complementary

#18597C #7C1827 #7C6D18

monochromatic

#05121A #0E3449 #18597C #227EAF #369FD8

Accessibility & contrast

On white

7.61

#18597C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#18597C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18597C

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18597C	#FFFFFF	#000000	##FFFFFF
##18597C	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48597E

Deuteranopia (green-blind)

#3B507B

Tritanopia (blue-blind)

#006265

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #18597c;
/* rgb */ color: rgb(24, 89, 124);
/* oklch */ color: oklch(44.1% 0.085 237.4);

Tailwind

colors: {
  custom: {
    50: '#6687a2',
    500: '#18597c',
    950: '#000000',
  },
}

SCSS

$custom: #18597c;
$custom-light: #6687a2;
$custom-dark: #000000;

JSON

{
  "hex": "#18597c",
  "rgb": {
    "r": 24,
    "g": 89,
    "b": 124
  },
  "hsl": {
    "h": 201,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.44131,
    "c": 0.0853,
    "h": 237.4
  },
  "luminance": 0.08794
}

Semantic roles & 50–950 ramp

primary

#18597C

secondary

#B1673F

accent

#7A3DEA

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #18597C

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

Preview Lab → · Contrast checker → · Palette generator →