#18387E#18387E

#18387E is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.2% C 0.125 H 263.1°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#18387E
RGB	rgb(24, 56, 126)
HSL	hsl(221, 68%, 29%)
HSV	hsv(221, 81%, 49%)
CMYK	cmyk(81%, 55.6%, 0%, 50.6%)
CIE-LAB	lab(25.35, 15.83, -43.00)
CIE-LCH	lch(25.35, 45.82, 290.21°)
OKLab	oklab(36.2% -0.015 -0.1239)
OKLCH	oklch(36.2% 0.125 263.1)
XYZ	xyz(5.5554, 4.5283, 20.3159)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18387E #7E5E18

analogous

#186B7E #18387E #2B187E

triadic

#18387E #7E1838 #387E18

tetradic

#18387E #7E186B #7E5E18 #187E2B

square

#18387E #7E186B #7E5E18 #187E2B

split-complementary

#18387E #7E2B18 #6B7E18

monochromatic

#050B1A #0E214B #18387E #224FB1 #376AD9

Accessibility & contrast

On white

11.02

#18387E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#18387E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18387E

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18387E	#FFFFFF	#000000	##FFFFFF
##18387E	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#014180

Deuteranopia (green-blind)

#00387D

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #18387e;
/* rgb */ color: rgb(24, 56, 126);
/* oklch */ color: oklch(36.2% 0.125 263.1);

Tailwind

colors: {
  custom: {
    50: '#666ea4',
    500: '#18387e',
    950: '#000000',
  },
}

SCSS

$custom: #18387e;
$custom-light: #666ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#18387e",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 126
  },
  "hsl": {
    "h": 221.176,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36198,
    "c": 0.12485,
    "h": 263.1
  },
  "luminance": 0.04529
}

Semantic roles & 50–950 ramp

primary

#18387E

secondary

#B28E3F

accent

#B43DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #18387E

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

Preview Lab → · Contrast checker → · Palette generator →