#18309F#18309F

#18309F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.7% C 0.180 H 266.8°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#18309F
RGB	rgb(24, 48, 159)
HSL	hsl(229, 74%, 36%)
HSV	hsv(229, 85%, 62%)
CMYK	cmyk(84.9%, 69.8%, 0%, 37.6%)
CIE-LAB	lab(26.19, 34.41, -62.03)
CIE-LCH	lch(26.19, 70.94, 299.01°)
OKLab	oklab(37.74% -0.0101 -0.1798)
OKLCH	oklch(37.74% 0.18 266.8)
XYZ	xyz(7.6895, 4.8104, 33.3174)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18309F #9F8718

analogous

#18739F #18309F #43189F

triadic

#18309F #9F1830 #309F18

tetradic

#18309F #9F1873 #9F8718 #189F43

square

#18309F #9F1873 #9F8718 #189F43

split-complementary

#18309F #9F4318 #739F18

monochromatic

#081035 #10206A #18309F #2040D4 #4D68E4

Accessibility & contrast

On white

10.70

#18309F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#18309F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18309F

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18309F	#FFFFFF	#000000	##FFFFFF
##18309F	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A2

Deuteranopia (green-blind)

#00389D

Tritanopia (blue-blind)

#004F63

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #18309f;
/* rgb */ color: rgb(24, 48, 159);
/* oklch */ color: oklch(37.7% 0.180 266.8);

Tailwind

colors: {
  custom: {
    50: '#7068bc',
    500: '#18309f',
    950: '#000000',
  },
}

SCSS

$custom: #18309f;
$custom-light: #7068bc;
$custom-dark: #000000;

JSON

{
  "hex": "#18309f",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 159
  },
  "hsl": {
    "h": 229.333,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.37739,
    "c": 0.18009,
    "h": 266.8
  },
  "luminance": 0.04811
}

Semantic roles & 50–950 ramp

primary

#18309F

secondary

#C6B14D

accent

#D037F0

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #18309F

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

Preview Lab → · Contrast checker → · Palette generator →