#18237D#18237D

#18237D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.9% C 0.150 H 269.5°. Best body text is #FFFFFF at 13.33:1 contrast (WCAG AA passes).

Color values

HEX	#18237D
RGB	rgb(24, 35, 125)
HSL	hsl(233, 68%, 29%)
HSV	hsv(233, 81%, 49%)
CMYK	cmyk(80.8%, 72%, 0%, 51%)
CIE-LAB	lab(19.54, 30.04, -51.85)
CIE-LCH	lch(19.54, 59.92, 300.08°)
OKLab	oklab(31.86% -0.0012 -0.1501)
OKLCH	oklch(31.86% 0.15 269.5)
XYZ	xyz(4.6781, 2.8764, 19.7067)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18237D #7D7218

analogous

#18567D #18237D #40187D

triadic

#18237D #7D1823 #237D18

tetradic

#18237D #7D1856 #7D7218 #187D40

square

#18237D #7D1856 #7D7218 #187D40

split-complementary

#18237D #7D4018 #567D18

monochromatic

#05071A #0E154A #18237D #2231B0 #3748D9

Accessibility & contrast

On white

13.33

#18237D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#18237D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18237D

13.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18237D	#FFFFFF	#000000	##FFFFFF
##18237D	1.00	13.33	1.58	13.33
#FFFFFF	13.33	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003480

Deuteranopia (green-blind)

#002A7B

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #18237d;
/* rgb */ color: rgb(24, 35, 125);
/* oklch */ color: oklch(31.9% 0.150 269.5);

Tailwind

colors: {
  custom: {
    50: '#685ea4',
    500: '#18237d',
    950: '#000000',
  },
}

SCSS

$custom: #18237d;
$custom-light: #685ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#18237d",
  "rgb": {
    "r": 24,
    "g": 35,
    "b": 125
  },
  "hsl": {
    "h": 233.465,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.31863,
    "c": 0.15016,
    "h": 269.5
  },
  "luminance": 0.02877
}

Semantic roles & 50–950 ramp

primary

#18237D

secondary

#B2A53F

accent

#D83DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #18237D

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

Preview Lab → · Contrast checker → · Palette generator →