#18587C#18587C

#18587C is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.9% C 0.086 H 238.5°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#18587C
RGB	rgb(24, 88, 124)
HSL	hsl(202, 68%, 29%)
HSV	hsv(202, 81%, 49%)
CMYK	cmyk(80.6%, 29%, 0%, 51.4%)
CIE-LAB	lab(35.26, -6.45, -25.94)
CIE-LCH	lch(35.26, 26.73, 256.04°)
OKLab	oklab(43.87% -0.0449 -0.0733)
OKLCH	oklch(43.87% 0.086 238.5)
XYZ	xyz(7.5031, 8.6280, 20.3348)
Luminance	0.0863 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18587C #7C3C18

analogous

#187C6E #18587C #18267C

triadic

#18587C #7C1858 #587C18

tetradic

#18587C #6E187C #7C3C18 #267C18

square

#18587C #6E187C #7C3C18 #267C18

split-complementary

#18587C #7C1826 #7C6E18

monochromatic

#05121A #0E3449 #18587C #227CAF #369ED8

Accessibility & contrast

On white

7.70

#18587C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#18587C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18587C

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18587C	#FFFFFF	#000000	##FFFFFF
##18587C	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47587E

Deuteranopia (green-blind)

#394F7B

Tritanopia (blue-blind)

#006164

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #18587c;
/* rgb */ color: rgb(24, 88, 124);
/* oklch */ color: oklch(43.9% 0.086 238.5);

Tailwind

colors: {
  custom: {
    50: '#6687a2',
    500: '#18587c',
    950: '#000000',
  },
}

SCSS

$custom: #18587c;
$custom-light: #6687a2;
$custom-dark: #000000;

JSON

{
  "hex": "#18587c",
  "rgb": {
    "r": 24,
    "g": 88,
    "b": 124
  },
  "hsl": {
    "h": 201.6,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.43873,
    "c": 0.08602,
    "h": 238.5
  },
  "luminance": 0.08629
}

Semantic roles & 50–950 ramp

primary

#18587C

secondary

#B1683F

accent

#7C3DEA

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #18587C

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

Preview Lab → · Contrast checker → · Palette generator →