#23399D#23399D

#23399D is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.6% C 0.164 H 268.1°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#23399D
RGB	rgb(35, 57, 157)
HSL	hsl(229, 64%, 38%)
HSV	hsv(229, 78%, 62%)
CMYK	cmyk(77.7%, 63.7%, 0%, 38.4%)
CIE-LAB	lab(28.69, 28.68, -56.70)
CIE-LCH	lch(28.69, 63.54, 296.83°)
OKLab	oklab(39.64% -0.0054 -0.164)
OKLCH	oklch(39.64% 0.164 268.1)
XYZ	xyz(8.2400, 5.7170, 32.5610)
Luminance	0.0572 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23399D #9D8723

analogous

#23769D #23399D #4A239D

triadic

#23399D #9D2339 #399D23

tetradic

#23399D #9D2376 #9D8723 #239D4A

square

#23399D #9D2376 #9D8723 #239D4A

split-complementary

#23399D #9D4A23 #769D23

monochromatic

#0D1539 #18276B #23399D #2E4BCF #5F75DB

Accessibility & contrast

On white

9.80

#23399D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#23399D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23399D

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23399D	#FFFFFF	#000000	##FFFFFF
##23399D	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A0

Deuteranopia (green-blind)

#003E9B

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #23399d;
/* rgb */ color: rgb(35, 57, 157);
/* oklch */ color: oklch(39.6% 0.164 268.1);

Tailwind

colors: {
  custom: {
    50: '#726fbb',
    500: '#23399d',
    950: '#000000',
  },
}

SCSS

$custom: #23399d;
$custom-light: #726fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#23399d",
  "rgb": {
    "r": 35,
    "g": 57,
    "b": 157
  },
  "hsl": {
    "h": 229.18,
    "s": 63.542,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39638,
    "c": 0.16404,
    "h": 268.1
  },
  "luminance": 0.05718
}

Semantic roles & 50–950 ramp

primary

#23399D

secondary

#C0AE5C

accent

#C941E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #23399D

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

Preview Lab → · Contrast checker → · Palette generator →