#18338E#18338E

#18338E is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.6% C 0.154 H 266.0°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#18338E
RGB	rgb(24, 51, 142)
HSL	hsl(226, 71%, 33%)
HSV	hsv(226, 83%, 56%)
CMYK	cmyk(83.1%, 64.1%, 0%, 44.3%)
CIE-LAB	lab(25.30, 25.82, -53.05)
CIE-LCH	lch(25.30, 59.00, 295.95°)
OKLab	oklab(36.59% -0.0109 -0.1535)
OKLCH	oklch(36.59% 0.154 266)
XYZ	xyz(6.4413, 4.5141, 26.1178)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18338E #8E7318

analogous

#186E8E #18338E #38188E

triadic

#18338E #8E1833 #338E18

tetradic

#18338E #8E186E #8E7318 #188E38

square

#18338E #8E186E #8E7318 #188E38

split-complementary

#18338E #8E3818 #6E8E18

monochromatic

#060D25 #0F205A #18338E #2146C2 #4165DF

Accessibility & contrast

On white

11.04

#18338E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#18338E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18338E

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18338E	#FFFFFF	#000000	##FFFFFF
##18338E	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004291

Deuteranopia (green-blind)

#00378C

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #18338e;
/* rgb */ color: rgb(24, 51, 142);
/* oklch */ color: oklch(36.6% 0.154 266.0);

Tailwind

colors: {
  custom: {
    50: '#6b6ab0',
    500: '#18338e',
    950: '#000000',
  },
}

SCSS

$custom: #18338e;
$custom-light: #6b6ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#18338e",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 142
  },
  "hsl": {
    "h": 226.271,
    "s": 71.084,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3659,
    "c": 0.15393,
    "h": 266
  },
  "luminance": 0.04515
}

Semantic roles & 50–950 ramp

primary

#18338E

secondary

#C0A342

accent

#C53AEE

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #18338E

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

Preview Lab → · Contrast checker → · Palette generator →