#18387C#18387C

#18387C is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.0% C 0.122 H 262.8°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#18387C
RGB	rgb(24, 56, 124)
HSL	hsl(221, 68%, 29%)
HSV	hsv(221, 81%, 49%)
CMYK	cmyk(80.6%, 54.8%, 0%, 51.4%)
CIE-LAB	lab(25.19, 15.00, -41.99)
CIE-LCH	lch(25.19, 44.59, 289.66°)
OKLab	oklab(36.03% -0.0152 -0.121)
OKLCH	oklch(36.03% 0.122 262.8)
XYZ	xyz(5.4276, 4.4771, 19.6430)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18387C #7C5C18

analogous

#186A7C #18387C #2A187C

triadic

#18387C #7C1838 #387C18

tetradic

#18387C #7C186A #7C5C18 #187C2A

square

#18387C #7C186A #7C5C18 #187C2A

split-complementary

#18387C #7C2A18 #6A7C18

monochromatic

#050C1A #0E2149 #18387C #224FAF #366AD8

Accessibility & contrast

On white

11.08

#18387C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#18387C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18387C

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18387C	#FFFFFF	#000000	##FFFFFF
##18387C	1.00	11.08	1.90	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06417E

Deuteranopia (green-blind)

#00377B

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #18387c;
/* rgb */ color: rgb(24, 56, 124);
/* oklch */ color: oklch(36.0% 0.122 262.8);

Tailwind

colors: {
  custom: {
    50: '#666ea2',
    500: '#18387c',
    950: '#000000',
  },
}

SCSS

$custom: #18387c;
$custom-light: #666ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#18387c",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 124
  },
  "hsl": {
    "h": 220.8,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.3603,
    "c": 0.12194,
    "h": 262.8
  },
  "luminance": 0.04478
}

Semantic roles & 50–950 ramp

primary

#18387C

secondary

#B18C3F

accent

#B33DEA

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18387C

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

Preview Lab → · Contrast checker → · Palette generator →