#233399#233399

#233399 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.1% C 0.166 H 269.5°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#233399
RGB	rgb(35, 51, 153)
HSL	hsl(232, 63%, 37%)
HSV	hsv(232, 77%, 60%)
CMYK	cmyk(77.1%, 66.7%, 0%, 40%)
CIE-LAB	lab(26.80, 31.14, -57.35)
CIE-LCH	lch(26.80, 65.26, 298.51°)
OKLab	oklab(38.14% -0.0015 -0.1659)
OKLCH	oklch(38.14% 0.166 269.5)
XYZ	xyz(7.6248, 5.0241, 30.6987)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233399 #998923

analogous

#236E99 #233399 #4E2399

triadic

#233399 #992333 #339923

tetradic

#233399 #99236E #998923 #23994E

square

#233399 #99236E #998923 #23994E

split-complementary

#233399 #994E23 #6E9923

monochromatic

#0C1235 #182267 #233399 #2E44CB #5D6EDA

Accessibility & contrast

On white

10.47

#233399 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#233399 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233399

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233399	#FFFFFF	#000000	##FFFFFF
##233399	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459C

Deuteranopia (green-blind)

#003A97

Tritanopia (blue-blind)

#004E61

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #233399;
/* rgb */ color: rgb(35, 51, 153);
/* oklch */ color: oklch(38.1% 0.166 269.5);

Tailwind

colors: {
  custom: {
    50: '#726ab8',
    500: '#233399',
    950: '#000000',
  },
}

SCSS

$custom: #233399;
$custom-light: #726ab8;
$custom-dark: #000000;

JSON

{
  "hex": "#233399",
  "rgb": {
    "r": 35,
    "g": 51,
    "b": 153
  },
  "hsl": {
    "h": 231.864,
    "s": 62.766,
    "l": 36.863
  },
  "oklch": {
    "l": 0.3814,
    "c": 0.16591,
    "h": 269.5
  },
  "luminance": 0.05025
}

Semantic roles & 50–950 ramp

primary

#233399

secondary

#BEB159

accent

#D042E6

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #233399

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

Preview Lab → · Contrast checker → · Palette generator →