#18597D#18597D

#18597D is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.2% C 0.086 H 238.2°. Best body text is #FFFFFF at 7.60:1 contrast (WCAG AA passes).

Color values

HEX	#18597D
RGB	rgb(24, 89, 125)
HSL	hsl(201, 68%, 29%)
HSV	hsv(201, 81%, 49%)
CMYK	cmyk(80.8%, 28.8%, 0%, 51%)
CIE-LAB	lab(35.63, -6.68, -25.97)
CIE-LCH	lch(35.63, 26.82, 255.57°)
OKLab	oklab(44.19% -0.0456 -0.0734)
OKLCH	oklch(44.19% 0.086 238.2)
XYZ	xyz(7.6493, 8.8187, 20.6971)
Luminance	0.0882 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18597D #7D3C18

analogous

#187D6F #18597D #18277D

triadic

#18597D #7D1859 #597D18

tetradic

#18597D #6F187D #7D3C18 #277D18

square

#18597D #6F187D #7D3C18 #277D18

split-complementary

#18597D #7D1827 #7D6F18

monochromatic

#05121A #0E344A #18597D #227EB0 #379FD9

Accessibility & contrast

On white

7.60

#18597D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#18597D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18597D

7.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18597D	#FFFFFF	#000000	##FFFFFF
##18597D	1.00	7.60	2.76	7.60
#FFFFFF	7.60	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48597F

Deuteranopia (green-blind)

#3A507C

Tritanopia (blue-blind)

#006265

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #18597d;
/* rgb */ color: rgb(24, 89, 125);
/* oklch */ color: oklch(44.2% 0.086 238.2);

Tailwind

colors: {
  custom: {
    50: '#6687a3',
    500: '#18597d',
    950: '#000000',
  },
}

SCSS

$custom: #18597d;
$custom-light: #6687a3;
$custom-dark: #000000;

JSON

{
  "hex": "#18597d",
  "rgb": {
    "r": 24,
    "g": 89,
    "b": 125
  },
  "hsl": {
    "h": 201.386,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.44187,
    "c": 0.08643,
    "h": 238.2
  },
  "luminance": 0.0882
}

Semantic roles & 50–950 ramp

primary

#18597D

secondary

#B2683F

accent

#7B3DEB

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #18597D

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

Preview Lab → · Contrast checker → · Palette generator →