#18398B#18398B

#18398B is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.5% C 0.142 H 264.1°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#18398B
RGB	rgb(24, 57, 139)
HSL	hsl(223, 71%, 32%)
HSV	hsv(223, 83%, 55%)
CMYK	cmyk(82.7%, 59%, 0%, 45.5%)
CIE-LAB	lab(26.69, 20.45, -48.93)
CIE-LCH	lch(26.69, 53.03, 292.68°)
OKLab	oklab(37.54% -0.0147 -0.1414)
OKLCH	oklch(37.54% 0.142 264.1)
XYZ	xyz(6.4984, 4.9838, 25.0406)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18398B #8B6A18

analogous

#18728B #18398B #31188B

triadic

#18398B #8B1839 #398B18

tetradic

#18398B #8B1872 #8B6A18 #188B31

square

#18398B #8B1872 #8B6A18 #188B31

split-complementary

#18398B #8B3118 #728B18

monochromatic

#060E23 #0F2457 #18398B #214EBF #3F6DDE

Accessibility & contrast

On white

10.52

#18398B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#18398B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18398B

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18398B	#FFFFFF	#000000	##FFFFFF
##18398B	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458E

Deuteranopia (green-blind)

#003A89

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #18398b;
/* rgb */ color: rgb(24, 57, 139);
/* oklch */ color: oklch(37.5% 0.142 264.1);

Tailwind

colors: {
  custom: {
    50: '#6a6eae',
    500: '#18398b',
    950: '#000000',
  },
}

SCSS

$custom: #18398b;
$custom-light: #6a6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#18398b",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 139
  },
  "hsl": {
    "h": 222.783,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37543,
    "c": 0.14214,
    "h": 264.1
  },
  "luminance": 0.04985
}

Semantic roles & 50–950 ramp

primary

#18398B

secondary

#BE9A40

accent

#BA3AED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #18398B

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

Preview Lab → · Contrast checker → · Palette generator →