#18355B#18355B

#18355B is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.8% C 0.076 H 256.1°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#18355B
RGB	rgb(24, 53, 91)
HSL	hsl(214, 58%, 23%)
HSV	hsv(214, 74%, 36%)
CMYK	cmyk(73.6%, 41.8%, 0%, 64.3%)
CIE-LAB	lab(21.93, 3.46, -25.98)
CIE-LCH	lch(21.93, 26.21, 277.57°)
OKLab	oklab(32.78% -0.0184 -0.074)
OKLCH	oklch(32.78% 0.076 256.1)
XYZ	xyz(3.5374, 3.4954, 10.3837)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18355B #5B3E18

analogous

#18565B #18355B #1D185B

triadic

#18355B #5B1835 #355B18

tetradic

#18355B #5B1856 #5B3E18 #185B1D

square

#18355B #5B1856 #5B3E18 #185B1D

split-complementary

#18355B #5B1D18 #565B18

monochromatic

#060E18 #0B192B #18355B #25518B #326DBC

Accessibility & contrast

On white

12.36

#18355B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#18355B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18355B

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18355B	#FFFFFF	#000000	##FFFFFF
##18355B	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24385D

Deuteranopia (green-blind)

#1A325A

Tritanopia (blue-blind)

#003E43

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #18355b;
/* rgb */ color: rgb(24, 53, 91);
/* oklch */ color: oklch(32.8% 0.076 256.1);

Tailwind

colors: {
  custom: {
    50: '#5e6b89',
    500: '#18355b',
    950: '#000000',
  },
}

SCSS

$custom: #18355b;
$custom-light: #5e6b89;
$custom-dark: #000000;

JSON

{
  "hex": "#18355b",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 91
  },
  "hsl": {
    "h": 214.03,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.32777,
    "c": 0.07622,
    "h": 256.1
  },
  "luminance": 0.03496
}

Semantic roles & 50–950 ramp

primary

#18355B

secondary

#926D3D

accent

#9E46E1

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #18355B

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

Preview Lab → · Contrast checker → · Palette generator →