#18375B#18375B

#18375B is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.3% C 0.074 H 253.8°. Best body text is #FFFFFF at 12.09:1 contrast (WCAG AA passes).

Color values

HEX	#18375B
RGB	rgb(24, 55, 91)
HSL	hsl(212, 58%, 23%)
HSV	hsv(212, 74%, 36%)
CMYK	cmyk(73.6%, 39.6%, 0%, 64.3%)
CIE-LAB	lab(22.59, 2.06, -24.93)
CIE-LCH	lch(22.59, 25.02, 274.71°)
OKLab	oklab(33.29% -0.0206 -0.0709)
OKLCH	oklch(33.29% 0.074 253.8)
XYZ	xyz(3.6305, 3.6815, 10.4148)
Luminance	0.0368 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18375B #5B3C18

analogous

#18585B #18375B #1B185B

triadic

#18375B #5B1837 #375B18

tetradic

#18375B #5B1858 #5B3C18 #185B1B

square

#18375B #5B1858 #5B3C18 #185B1B

split-complementary

#18375B #5B1B18 #585B18

monochromatic

#060F18 #0B1A2B #18375B #25548B #3272BC

Accessibility & contrast

On white

12.09

#18375B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#18375B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18375B

12.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18375B	#FFFFFF	#000000	##FFFFFF
##18375B	1.00	12.09	1.74	12.09
#FFFFFF	12.09	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27395C

Deuteranopia (green-blind)

#1D335A

Tritanopia (blue-blind)

#003F44

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #18375b;
/* rgb */ color: rgb(24, 55, 91);
/* oklch */ color: oklch(33.3% 0.074 253.8);

Tailwind

colors: {
  custom: {
    50: '#5e6d89',
    500: '#18375b',
    950: '#000000',
  },
}

SCSS

$custom: #18375b;
$custom-light: #5e6d89;
$custom-dark: #000000;

JSON

{
  "hex": "#18375b",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 91
  },
  "hsl": {
    "h": 212.239,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.33293,
    "c": 0.07381,
    "h": 253.8
  },
  "luminance": 0.03682
}

Semantic roles & 50–950 ramp

primary

#18375B

secondary

#926B3D

accent

#9A46E1

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #18375B

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

Preview Lab → · Contrast checker → · Palette generator →