#18318E#18318E

#18318E is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.2% C 0.156 H 266.4°. Best body text is #FFFFFF at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#18318E
RGB	rgb(24, 49, 142)
HSL	hsl(227, 71%, 33%)
HSV	hsv(227, 83%, 56%)
CMYK	cmyk(83.1%, 65.5%, 0%, 44.3%)
CIE-LAB	lab(24.77, 27.19, -53.92)
CIE-LCH	lch(24.77, 60.39, 296.76°)
OKLab	oklab(36.2% -0.0097 -0.1561)
OKLCH	oklch(36.2% 0.156 266.4)
XYZ	xyz(6.3558, 4.3431, 26.0893)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18318E #8E7518

analogous

#186C8E #18318E #3A188E

triadic

#18318E #8E1831 #318E18

tetradic

#18318E #8E186C #8E7518 #188E3A

square

#18318E #8E186C #8E7518 #188E3A

split-complementary

#18318E #8E3A18 #6C8E18

monochromatic

#060D25 #0F1F5A #18318E #2143C2 #4163DF

Accessibility & contrast

On white

11.24

#18318E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#18318E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18318E

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18318E	#FFFFFF	#000000	##FFFFFF
##18318E	1.00	11.24	1.87	11.24
#FFFFFF	11.24	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00358C

Tritanopia (blue-blind)

#004A5B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #18318e;
/* rgb */ color: rgb(24, 49, 142);
/* oklch */ color: oklch(36.2% 0.156 266.4);

Tailwind

colors: {
  custom: {
    50: '#6b68b0',
    500: '#18318e',
    950: '#000000',
  },
}

SCSS

$custom: #18318e;
$custom-light: #6b68b0;
$custom-dark: #000000;

JSON

{
  "hex": "#18318e",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 142
  },
  "hsl": {
    "h": 227.288,
    "s": 71.084,
    "l": 32.549
  },
  "oklch": {
    "l": 0.362,
    "c": 0.15641,
    "h": 266.4
  },
  "luminance": 0.04344
}

Semantic roles & 50–950 ramp

primary

#18318E

secondary

#C0A542

accent

#C83AEE

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #18318E

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

Preview Lab → · Contrast checker → · Palette generator →