#18338F#18338F

#18338F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.7% C 0.155 H 266.0°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#18338F
RGB	rgb(24, 51, 143)
HSL	hsl(226, 71%, 33%)
HSV	hsv(226, 83%, 56%)
CMYK	cmyk(83.2%, 64.3%, 0%, 43.9%)
CIE-LAB	lab(25.39, 26.22, -53.52)
CIE-LCH	lch(25.39, 59.60, 296.10°)
OKLab	oklab(36.69% -0.0109 -0.1549)
OKLCH	oklch(36.69% 0.155 266)
XYZ	xyz(6.5167, 4.5442, 26.5149)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18338F #8F7418

analogous

#186E8F #18338F #39188F

triadic

#18338F #8F1833 #338F18

tetradic

#18338F #8F186E #8F7418 #188F39

square

#18338F #8F186E #8F7418 #188F39

split-complementary

#18338F #8F3918 #6E8F18

monochromatic

#060E26 #0F205B #18338F #2146C3 #4266DF

Accessibility & contrast

On white

11.00

#18338F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#18338F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18338F

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18338F	#FFFFFF	#000000	##FFFFFF
##18338F	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004292

Deuteranopia (green-blind)

#00378D

Tritanopia (blue-blind)

#004B5C

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #18338f;
/* rgb */ color: rgb(24, 51, 143);
/* oklch */ color: oklch(36.7% 0.155 266.0);

Tailwind

colors: {
  custom: {
    50: '#6c6ab1',
    500: '#18338f',
    950: '#000000',
  },
}

SCSS

$custom: #18338f;
$custom-light: #6c6ab1;
$custom-dark: #000000;

JSON

{
  "hex": "#18338f",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 143
  },
  "hsl": {
    "h": 226.387,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.36687,
    "c": 0.1553,
    "h": 266
  },
  "luminance": 0.04545
}

Semantic roles & 50–950 ramp

primary

#18338F

secondary

#C0A443

accent

#C53AEE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #18338F

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

Preview Lab → · Contrast checker → · Palette generator →