#23309E#23309E

#23309E is a dark, vivid blue. Relative luminance 0.049; OKLCH L 38.1% C 0.176 H 269.9°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#23309E
RGB	rgb(35, 48, 158)
HSL	hsl(234, 64%, 38%)
HSV	hsv(234, 78%, 62%)
CMYK	cmyk(77.8%, 69.6%, 0%, 38%)
CIE-LAB	lab(26.56, 34.94, -60.80)
CIE-LCH	lch(26.56, 70.12, 299.88°)
OKLab	oklab(38.11% -0.0002 -0.176)
OKLCH	oklch(38.11% 0.176 269.9)
XYZ	xyz(7.9195, 4.9390, 32.8771)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23309E #9E9123

analogous

#236D9E #23309E #54239E

triadic

#23309E #9E2330 #309E23

tetradic

#23309E #9E236D #9E9123 #239E54

square

#23309E #9E236D #9E9123 #239E54

split-complementary

#23309E #9E5423 #6D9E23

monochromatic

#0D123A #18216C #23309E #2E3FD0 #606DDC

Accessibility & contrast

On white

10.56

#23309E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#23309E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23309E

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23309E	#FFFFFF	#000000	##FFFFFF
##23309E	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A1

Deuteranopia (green-blind)

#00399C

Tritanopia (blue-blind)

#004E63

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #23309e;
/* rgb */ color: rgb(35, 48, 158);
/* oklch */ color: oklch(38.1% 0.176 269.9);

Tailwind

colors: {
  custom: {
    50: '#7368bc',
    500: '#23309e',
    950: '#000000',
  },
}

SCSS

$custom: #23309e;
$custom-light: #7368bc;
$custom-dark: #000000;

JSON

{
  "hex": "#23309e",
  "rgb": {
    "r": 35,
    "g": 48,
    "b": 158
  },
  "hsl": {
    "h": 233.659,
    "s": 63.731,
    "l": 37.843
  },
  "oklch": {
    "l": 0.3811,
    "c": 0.17599,
    "h": 269.9
  },
  "luminance": 0.0494
}

Semantic roles & 50–950 ramp

primary

#23309E

secondary

#C1B65C

accent

#D541E7

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #23309E

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

Preview Lab → · Contrast checker → · Palette generator →