#18455B#18455B

#18455B is a dark, moderate cyan. Relative luminance 0.052; OKLCH L 37.0% C 0.061 H 233.2°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#18455B
RGB	rgb(24, 69, 91)
HSL	hsl(200, 58%, 23%)
HSV	hsv(200, 74%, 36%)
CMYK	cmyk(73.6%, 24.2%, 0%, 64.3%)
CIE-LAB	lab(27.31, -7.26, -17.53)
CIE-LCH	lch(27.31, 18.97, 247.50°)
OKLab	oklab(37.02% -0.0368 -0.0492)
OKLCH	oklch(37.02% 0.061 233.2)
XYZ	xyz(4.3924, 5.2053, 10.6687)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18455B #5B2E18

analogous

#185B4F #18455B #18245B

triadic

#18455B #5B1845 #455B18

tetradic

#18455B #4F185B #5B2E18 #245B18

square

#18455B #4F185B #5B2E18 #245B18

split-complementary

#18455B #5B1824 #5B4F18

monochromatic

#061218 #0B202B #18455B #256A8B #328EBC

Accessibility & contrast

On white

10.29

#18455B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#18455B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18455B

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18455B	#FFFFFF	#000000	##FFFFFF
##18455B	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A445C

Deuteranopia (green-blind)

#313E5B

Tritanopia (blue-blind)

#004B4C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #18455b;
/* rgb */ color: rgb(24, 69, 91);
/* oklch */ color: oklch(37.0% 0.061 233.2);

Tailwind

colors: {
  custom: {
    50: '#5e7889',
    500: '#18455b',
    950: '#000000',
  },
}

SCSS

$custom: #18455b;
$custom-light: #5e7889;
$custom-dark: #000000;

JSON

{
  "hex": "#18455b",
  "rgb": {
    "r": 24,
    "g": 69,
    "b": 91
  },
  "hsl": {
    "h": 199.701,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.3702,
    "c": 0.06144,
    "h": 233.2
  },
  "luminance": 0.05206
}

Semantic roles & 50–950 ramp

primary

#18455B

secondary

#92593D

accent

#7946E1

background

#F5F7F8

surface

#EAEDF0

border

#C6C8CB

text

#05090B

muted

#797B7C

Preview Lab

Preview with #18455B

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

Preview Lab → · Contrast checker → · Palette generator →