#23309C#23309C

#23309C is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.9% C 0.173 H 270.0°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#23309C
RGB	rgb(35, 48, 156)
HSL	hsl(234, 63%, 37%)
HSV	hsv(234, 78%, 61%)
CMYK	cmyk(77.6%, 69.2%, 0%, 38.8%)
CIE-LAB	lab(26.36, 34.20, -59.90)
CIE-LCH	lch(26.36, 68.98, 299.73°)
OKLab	oklab(37.91% 0 -0.1734)
OKLCH	oklch(37.91% 0.173 270)
XYZ	xyz(7.7488, 4.8707, 31.9778)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23309C #9C8F23

analogous

#236C9C #23309C #53239C

triadic

#23309C #9C2330 #309C23

tetradic

#23309C #9C236C #9C8F23 #239C53

square

#23309C #9C236C #9C8F23 #239C53

split-complementary

#23309C #9C5323 #6C9C23

monochromatic

#0D1138 #18216A #23309C #2E3FCE #5E6CDB

Accessibility & contrast

On white

10.64

#23309C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#23309C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23309C

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23309C	#FFFFFF	#000000	##FFFFFF
##23309C	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449F

Deuteranopia (green-blind)

#00399A

Tritanopia (blue-blind)

#004E62

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #23309c;
/* rgb */ color: rgb(35, 48, 156);
/* oklch */ color: oklch(37.9% 0.173 270.0);

Tailwind

colors: {
  custom: {
    50: '#7368ba',
    500: '#23309c',
    950: '#000000',
  },
}

SCSS

$custom: #23309c;
$custom-light: #7368ba;
$custom-dark: #000000;

JSON

{
  "hex": "#23309c",
  "rgb": {
    "r": 35,
    "g": 48,
    "b": 156
  },
  "hsl": {
    "h": 233.554,
    "s": 63.351,
    "l": 37.451
  },
  "oklch": {
    "l": 0.37908,
    "c": 0.17338,
    "h": 270
  },
  "luminance": 0.04872
}

Semantic roles & 50–950 ramp

primary

#23309C

secondary

#C0B55B

accent

#D541E6

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #23309C

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

Preview Lab → · Contrast checker → · Palette generator →