#23309A#23309A

#23309A is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.7% C 0.171 H 270.1°. Best body text is #FFFFFF at 10.71:1 contrast (WCAG AA passes).

Color values

HEX	#23309A
RGB	rgb(35, 48, 154)
HSL	hsl(233, 63%, 37%)
HSV	hsv(233, 77%, 60%)
CMYK	cmyk(77.3%, 68.8%, 0%, 39.6%)
CIE-LAB	lab(26.17, 33.47, -59.00)
CIE-LCH	lch(26.17, 67.83, 299.57°)
OKLab	oklab(37.71% 0.0002 -0.1708)
OKLCH	oklch(37.71% 0.171 270.1)
XYZ	xyz(7.5808, 4.8035, 31.0932)
Luminance	0.0480 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23309A #9A8D23

analogous

#236C9A #23309A #51239A

triadic

#23309A #9A2330 #309A23

tetradic

#23309A #9A236C #9A8D23 #239A51

square

#23309A #9A236C #9A8D23 #239A51

split-complementary

#23309A #9A5123 #6C9A23

monochromatic

#0C1136 #182068 #23309A #2E40CC #5D6BDA

Accessibility & contrast

On white

10.71

#23309A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#23309A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23309A

10.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23309A	#FFFFFF	#000000	##FFFFFF
##23309A	1.00	10.71	1.96	10.71
#FFFFFF	10.71	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449D

Deuteranopia (green-blind)

#003898

Tritanopia (blue-blind)

#004D61

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #23309a;
/* rgb */ color: rgb(35, 48, 154);
/* oklch */ color: oklch(37.7% 0.171 270.1);

Tailwind

colors: {
  custom: {
    50: '#7268b9',
    500: '#23309a',
    950: '#000000',
  },
}

SCSS

$custom: #23309a;
$custom-light: #7268b9;
$custom-dark: #000000;

JSON

{
  "hex": "#23309a",
  "rgb": {
    "r": 35,
    "g": 48,
    "b": 154
  },
  "hsl": {
    "h": 233.445,
    "s": 62.963,
    "l": 37.059
  },
  "oklch": {
    "l": 0.37706,
    "c": 0.17075,
    "h": 270.1
  },
  "luminance": 0.04804
}

Semantic roles & 50–950 ramp

primary

#23309A

secondary

#BFB45A

accent

#D442E6

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #23309A

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

Preview Lab → · Contrast checker → · Palette generator →