#23399C#23399C

#23399C is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.163 H 268.1°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#23399C
RGB	rgb(35, 57, 156)
HSL	hsl(229, 63%, 37%)
HSV	hsv(229, 78%, 61%)
CMYK	cmyk(77.6%, 63.5%, 0%, 38.8%)
CIE-LAB	lab(28.60, 28.29, -56.24)
CIE-LCH	lch(28.60, 62.95, 296.71°)
OKLab	oklab(39.55% -0.0053 -0.1626)
OKLCH	oklch(39.55% 0.163 268.1)
XYZ	xyz(8.1549, 5.6830, 32.1132)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23399C #9C8623

analogous

#23759C #23399C #4A239C

triadic

#23399C #9C2339 #399C23

tetradic

#23399C #9C2375 #9C8623 #239C4A

square

#23399C #9C2375 #9C8623 #239C4A

split-complementary

#23399C #9C4A23 #759C23

monochromatic

#0D1438 #18276A #23399C #2E4BCE #5E75DB

Accessibility & contrast

On white

9.83

#23399C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#23399C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23399C

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23399C	#FFFFFF	#000000	##FFFFFF
##23399C	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499F

Deuteranopia (green-blind)

#003E9A

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #23399c;
/* rgb */ color: rgb(35, 57, 156);
/* oklch */ color: oklch(39.5% 0.163 268.1);

Tailwind

colors: {
  custom: {
    50: '#726fba',
    500: '#23399c',
    950: '#000000',
  },
}

SCSS

$custom: #23399c;
$custom-light: #726fba;
$custom-dark: #000000;

JSON

{
  "hex": "#23399c",
  "rgb": {
    "r": 35,
    "g": 57,
    "b": 156
  },
  "hsl": {
    "h": 229.091,
    "s": 63.351,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39545,
    "c": 0.16269,
    "h": 268.1
  },
  "luminance": 0.05684
}

Semantic roles & 50–950 ramp

primary

#23399C

secondary

#C0AD5B

accent

#C841E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #23399C

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

Preview Lab → · Contrast checker → · Palette generator →