#18317B#18317B

#18317B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.4% C 0.130 H 265.6°. Best body text is #FFFFFF at 11.90:1 contrast (WCAG AA passes).

Color values

HEX	#18317B
RGB	rgb(24, 49, 123)
HSL	hsl(225, 67%, 29%)
HSV	hsv(225, 80%, 48%)
CMYK	cmyk(80.5%, 60.2%, 0%, 51.8%)
CIE-LAB	lab(23.07, 19.56, -44.81)
CIE-LCH	lch(23.07, 48.89, 293.58°)
OKLab	oklab(34.4% -0.0099 -0.1294)
OKLCH	oklch(34.4% 0.13 265.6)
XYZ	xyz(5.0489, 3.8203, 19.2063)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18317B #7B6218

analogous

#18637B #18317B #30187B

triadic

#18317B #7B1831 #317B18

tetradic

#18317B #7B1863 #7B6218 #187B30

square

#18317B #7B1863 #7B6218 #187B30

split-complementary

#18317B #7B3018 #637B18

monochromatic

#050A1A #0E1D48 #18317B #2245AE #365FD8

Accessibility & contrast

On white

11.90

#18317B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#18317B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18317B

11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18317B	#FFFFFF	#000000	##FFFFFF
##18317B	1.00	11.90	1.76	11.90
#FFFFFF	11.90	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7E

Deuteranopia (green-blind)

#00337A

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #18317b;
/* rgb */ color: rgb(24, 49, 123);
/* oklch */ color: oklch(34.4% 0.130 265.6);

Tailwind

colors: {
  custom: {
    50: '#6668a2',
    500: '#18317b',
    950: '#000000',
  },
}

SCSS

$custom: #18317b;
$custom-light: #6668a2;
$custom-dark: #000000;

JSON

{
  "hex": "#18317b",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 123
  },
  "hsl": {
    "h": 224.848,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.34403,
    "c": 0.12977,
    "h": 265.6
  },
  "luminance": 0.03821
}

Semantic roles & 50–950 ramp

primary

#18317B

secondary

#B0933F

accent

#BF3EEA

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18317B

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

Preview Lab → · Contrast checker → · Palette generator →