#18247B#18247B

#18247B is a dark, vivid blue. Relative luminance 0.029; OKLCH L 31.8% C 0.146 H 269.4°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#18247B
RGB	rgb(24, 36, 123)
HSL	hsl(233, 67%, 29%)
HSV	hsv(233, 80%, 48%)
CMYK	cmyk(80.5%, 70.7%, 0%, 51.8%)
CIE-LAB	lab(19.58, 28.61, -50.52)
CIE-LCH	lch(19.58, 58.06, 299.52°)
OKLab	oklab(31.83% -0.0016 -0.1462)
OKLCH	oklch(31.83% 0.146 269.4)
XYZ	xyz(4.5815, 2.8855, 19.0505)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18247B #7B6F18

analogous

#18567B #18247B #3E187B

triadic

#18247B #7B1824 #247B18

tetradic

#18247B #7B1856 #7B6F18 #187B3E

square

#18247B #7B1856 #7B6F18 #187B3E

split-complementary

#18247B #7B3E18 #567B18

monochromatic

#05071A #0E1548 #18247B #2233AE #3649D8

Accessibility & contrast

On white

13.31

#18247B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#18247B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18247B

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18247B	#FFFFFF	#000000	##FFFFFF
##18247B	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347E

Deuteranopia (green-blind)

#002B79

Tritanopia (blue-blind)

#003C4C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #18247b;
/* rgb */ color: rgb(24, 36, 123);
/* oklch */ color: oklch(31.8% 0.146 269.4);

Tailwind

colors: {
  custom: {
    50: '#675fa2',
    500: '#18247b',
    950: '#000000',
  },
}

SCSS

$custom: #18247b;
$custom-light: #675fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#18247b",
  "rgb": {
    "r": 24,
    "g": 36,
    "b": 123
  },
  "hsl": {
    "h": 232.727,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.31828,
    "c": 0.14626,
    "h": 269.4
  },
  "luminance": 0.02886
}

Semantic roles & 50–950 ramp

primary

#18247B

secondary

#B0A23F

accent

#D53EEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #18247B

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

Preview Lab → · Contrast checker → · Palette generator →