#18588C#18588C

#18588C is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.8% C 0.106 H 247.9°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#18588C
RGB	rgb(24, 88, 140)
HSL	hsl(207, 71%, 32%)
HSV	hsv(207, 83%, 55%)
CMYK	cmyk(82.9%, 37.1%, 0%, 45.1%)
CIE-LAB	lab(36.11, -0.16, -34.40)
CIE-LCH	lch(36.11, 34.40, 269.73°)
OKLab	oklab(44.83% -0.0398 -0.098)
OKLCH	oklch(44.83% 0.106 247.9)
XYZ	xyz(8.5982, 9.0660, 26.1026)
Luminance	0.0907 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18588C #8C4C18

analogous

#188C86 #18588C #181E8C

triadic

#18588C #8C1858 #588C18

tetradic

#18588C #86188C #8C4C18 #1E8C18

square

#18588C #86188C #8C4C18 #1E8C18

split-complementary

#18588C #8C181E #8C8618

monochromatic

#061624 #0F3758 #18588C #2179C0 #4097DE

Accessibility & contrast

On white

7.46

#18588C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#18588C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18588C

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18588C	#FFFFFF	#000000	##FFFFFF
##18588C	1.00	7.46	2.81	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5B8E

Deuteranopia (green-blind)

#2E508B

Tritanopia (blue-blind)

#00656B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #18588c;
/* rgb */ color: rgb(24, 88, 140);
/* oklch */ color: oklch(44.8% 0.106 247.9);

Tailwind

colors: {
  custom: {
    50: '#6986ae',
    500: '#18588c',
    950: '#000000',
  },
}

SCSS

$custom: #18588c;
$custom-light: #6986ae;
$custom-dark: #000000;

JSON

{
  "hex": "#18588c",
  "rgb": {
    "r": 24,
    "g": 88,
    "b": 140
  },
  "hsl": {
    "h": 206.897,
    "s": 70.732,
    "l": 32.157
  },
  "oklch": {
    "l": 0.44826,
    "c": 0.10579,
    "h": 247.9
  },
  "luminance": 0.09067
}

Semantic roles & 50–950 ramp

primary

#18588C

secondary

#BF7941

accent

#8B3AED

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #18588C

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

Preview Lab → · Contrast checker → · Palette generator →