#23399B#23399B

#23399B is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.161 H 268.1°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#23399B
RGB	rgb(35, 57, 155)
HSL	hsl(229, 63%, 37%)
HSV	hsv(229, 77%, 61%)
CMYK	cmyk(77.4%, 63.2%, 0%, 39.2%)
CIE-LAB	lab(28.51, 27.91, -55.77)
CIE-LCH	lch(28.51, 62.37, 296.59°)
OKLab	oklab(39.45% -0.0053 -0.1612)
OKLCH	oklch(39.45% 0.161 268.1)
XYZ	xyz(8.0706, 5.6492, 31.6691)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23399B #9B8523

analogous

#23759B #23399B #49239B

triadic

#23399B #9B2339 #399B23

tetradic

#23399B #9B2375 #9B8523 #239B49

square

#23399B #9B2375 #9B8523 #239B49

split-complementary

#23399B #9B4923 #759B23

monochromatic

#0C1437 #182769 #23399B #2E4BCD #5E75DB

Accessibility & contrast

On white

9.86

#23399B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#23399B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23399B

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23399B	#FFFFFF	#000000	##FFFFFF
##23399B	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499E

Deuteranopia (green-blind)

#003E99

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #23399b;
/* rgb */ color: rgb(35, 57, 155);
/* oklch */ color: oklch(39.5% 0.161 268.1);

Tailwind

colors: {
  custom: {
    50: '#716fb9',
    500: '#23399b',
    950: '#000000',
  },
}

SCSS

$custom: #23399b;
$custom-light: #716fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#23399b",
  "rgb": {
    "r": 35,
    "g": 57,
    "b": 155
  },
  "hsl": {
    "h": 229,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39452,
    "c": 0.16133,
    "h": 268.1
  },
  "luminance": 0.0565
}

Semantic roles & 50–950 ramp

primary

#23399B

secondary

#BFAD5A

accent

#C842E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #23399B

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

Preview Lab → · Contrast checker → · Palette generator →