#18387D#18387D

#18387D is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.123 H 263.0°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#18387D
RGB	rgb(24, 56, 125)
HSL	hsl(221, 68%, 29%)
HSV	hsv(221, 81%, 49%)
CMYK	cmyk(80.8%, 55.2%, 0%, 51%)
CIE-LAB	lab(25.27, 15.41, -42.50)
CIE-LCH	lch(25.27, 45.20, 289.94°)
OKLab	oklab(36.11% -0.0151 -0.1225)
OKLCH	oklch(36.11% 0.123 263)
XYZ	xyz(5.4912, 4.5026, 19.9777)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18387D #7D5D18

analogous

#186B7D #18387D #2B187D

triadic

#18387D #7D1838 #387D18

tetradic

#18387D #7D186B #7D5D18 #187D2B

square

#18387D #7D186B #7D5D18 #187D2B

split-complementary

#18387D #7D2B18 #6B7D18

monochromatic

#050C1A #0E214A #18387D #224FB0 #376AD9

Accessibility & contrast

On white

11.05

#18387D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#18387D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18387D

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18387D	#FFFFFF	#000000	##FFFFFF
##18387D	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03417F

Deuteranopia (green-blind)

#00387C

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #18387d;
/* rgb */ color: rgb(24, 56, 125);
/* oklch */ color: oklch(36.1% 0.123 263.0);

Tailwind

colors: {
  custom: {
    50: '#666ea3',
    500: '#18387d',
    950: '#000000',
  },
}

SCSS

$custom: #18387d;
$custom-light: #666ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#18387d",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 125
  },
  "hsl": {
    "h": 220.99,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36114,
    "c": 0.12339,
    "h": 263
  },
  "luminance": 0.04503
}

Semantic roles & 50–950 ramp

primary

#18387D

secondary

#B28D3F

accent

#B43DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18387D

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

Preview Lab → · Contrast checker → · Palette generator →