#18317E#18317E

#18317E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.134 H 265.8°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#18317E
RGB	rgb(24, 49, 126)
HSL	hsl(225, 68%, 29%)
HSV	hsv(225, 81%, 49%)
CMYK	cmyk(81%, 61.1%, 0%, 50.6%)
CIE-LAB	lab(23.33, 20.78, -46.28)
CIE-LCH	lch(23.33, 50.73, 294.18°)
OKLab	oklab(34.68% -0.0098 -0.1337)
OKLCH	oklch(34.68% 0.134 265.8)
XYZ	xyz(5.2396, 3.8966, 20.2106)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18317E #7E6518

analogous

#18647E #18317E #32187E

triadic

#18317E #7E1831 #317E18

tetradic

#18317E #7E1864 #7E6518 #187E32

square

#18317E #7E1864 #7E6518 #187E32

split-complementary

#18317E #7E3218 #647E18

monochromatic

#050A1A #0E1D4B #18317E #2245B1 #375FD9

Accessibility & contrast

On white

11.80

#18317E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#18317E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18317E

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18317E	#FFFFFF	#000000	##FFFFFF
##18317E	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C81

Deuteranopia (green-blind)

#00337D

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #18317e;
/* rgb */ color: rgb(24, 49, 126);
/* oklch */ color: oklch(34.7% 0.134 265.8);

Tailwind

colors: {
  custom: {
    50: '#6768a4',
    500: '#18317e',
    950: '#000000',
  },
}

SCSS

$custom: #18317e;
$custom-light: #6768a4;
$custom-dark: #000000;

JSON

{
  "hex": "#18317e",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 126
  },
  "hsl": {
    "h": 225.294,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.34677,
    "c": 0.13409,
    "h": 265.8
  },
  "luminance": 0.03897
}

Semantic roles & 50–950 ramp

primary

#18317E

secondary

#B2963F

accent

#C03DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18317E

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

Preview Lab → · Contrast checker → · Palette generator →