#18497B#18497B

#18497B is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 40.0% C 0.099 H 252.1°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#18497B
RGB	rgb(24, 73, 123)
HSL	hsl(210, 67%, 29%)
HSV	hsv(210, 80%, 48%)
CMYK	cmyk(80.5%, 40.7%, 0%, 51.8%)
CIE-LAB	lab(30.37, 2.82, -33.04)
CIE-LCH	lch(30.37, 33.16, 274.88°)
OKLab	oklab(40.01% -0.0304 -0.0943)
OKLCH	oklch(40.01% 0.099 252.1)
XYZ	xyz(6.3330, 6.3886, 19.6344)
Luminance	0.0639 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18497B #7B4A18

analogous

#187B7B #18497B #19187B

triadic

#18497B #7B1849 #497B18

tetradic

#18497B #7B187B #7B4A18 #187B19

square

#18497B #7B187B #7B4A18 #187B19

split-complementary

#18497B #7B1918 #7B7B18

monochromatic

#050F1A #0E2B48 #18497B #2267AE #3686D8

Accessibility & contrast

On white

9.22

#18497B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#18497B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18497B

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18497B	#FFFFFF	#000000	##FFFFFF
##18497B	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314C7D

Deuteranopia (green-blind)

#21437A

Tritanopia (blue-blind)

#00555C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #18497b;
/* rgb */ color: rgb(24, 73, 123);
/* oklch */ color: oklch(40.0% 0.099 252.1);

Tailwind

colors: {
  custom: {
    50: '#657ba1',
    500: '#18497b',
    950: '#000000',
  },
}

SCSS

$custom: #18497b;
$custom-light: #657ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#18497b",
  "rgb": {
    "r": 24,
    "g": 73,
    "b": 123
  },
  "hsl": {
    "h": 210.303,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.40005,
    "c": 0.0991,
    "h": 252.1
  },
  "luminance": 0.06389
}

Semantic roles & 50–950 ramp

primary

#18497B

secondary

#B0783F

accent

#953EEA

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06090F

muted

#7A7B7E

Preview Lab

Preview with #18497B

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

Preview Lab → · Contrast checker → · Palette generator →