#18289E#18289E

#18289E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.3% C 0.187 H 267.8°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#18289E
RGB	rgb(24, 40, 158)
HSL	hsl(233, 74%, 36%)
HSV	hsv(233, 85%, 62%)
CMYK	cmyk(84.8%, 74.7%, 0%, 38%)
CIE-LAB	lab(24.26, 39.06, -64.61)
CIE-LCH	lch(24.26, 75.50, 301.16°)
OKLab	oklab(36.32% -0.0072 -0.1873)
OKLCH	oklch(36.32% 0.187 267.8)
XYZ	xyz(7.3049, 4.1795, 32.7628)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18289E #9E8E18

analogous

#186B9E #18289E #4B189E

triadic

#18289E #9E1828 #289E18

tetradic

#18289E #9E186B #9E8E18 #189E4B

square

#18289E #9E186B #9E8E18 #189E4B

split-complementary

#18289E #9E4B18 #6B9E18

monochromatic

#080D34 #101B69 #18289E #2035D3 #4D5FE4

Accessibility & contrast

On white

11.44

#18289E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#18289E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18289E

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18289E	#FFFFFF	#000000	##FFFFFF
##18289E	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A1

Deuteranopia (green-blind)

#00339C

Tritanopia (blue-blind)

#004B61

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #18289e;
/* rgb */ color: rgb(24, 40, 158);
/* oklch */ color: oklch(36.3% 0.187 267.8);

Tailwind

colors: {
  custom: {
    50: '#7163bc',
    500: '#18289e',
    950: '#000000',
  },
}

SCSS

$custom: #18289e;
$custom-light: #7163bc;
$custom-dark: #000000;

JSON

{
  "hex": "#18289e",
  "rgb": {
    "r": 24,
    "g": 40,
    "b": 158
  },
  "hsl": {
    "h": 232.836,
    "s": 73.626,
    "l": 35.686
  },
  "oklch": {
    "l": 0.36315,
    "c": 0.18743,
    "h": 267.8
  },
  "luminance": 0.0418
}

Semantic roles & 50–950 ramp

primary

#18289E

secondary

#C6B74C

accent

#DA38F0

background

#F7F5FB

surface

#EEEAF7

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #18289E

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

Preview Lab → · Contrast checker → · Palette generator →