#23307B#23307B

#23307B is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.8% C 0.128 H 270.7°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#23307B
RGB	rgb(35, 48, 123)
HSL	hsl(231, 56%, 31%)
HSV	hsv(231, 72%, 48%)
CMYK	cmyk(71.5%, 61%, 0%, 51.8%)
CIE-LAB	lab(23.34, 21.74, -44.34)
CIE-LCH	lch(23.34, 49.38, 296.12°)
OKLab	oklab(34.76% 0.0017 -0.1278)
OKLCH	oklch(34.76% 0.128 270.7)
XYZ	xyz(5.3240, 3.9008, 19.2074)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23307B #7B6E23

analogous

#235C7B #23307B #42237B

triadic

#23307B #7B2330 #307B23

tetradic

#23307B #7B235C #7B6E23 #237B42

square

#23307B #7B235C #7B6E23 #237B42

split-complementary

#23307B #7B4223 #5C7B23

monochromatic

#080B1C #151D4B #23307B #3143AB #4C5FCC

Accessibility & contrast

On white

11.80

#23307B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#23307B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23307B

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23307B	#FFFFFF	#000000	##FFFFFF
##23307B	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7E

Deuteranopia (green-blind)

#00347A

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #23307b;
/* rgb */ color: rgb(35, 48, 123);
/* oklch */ color: oklch(34.8% 0.128 270.7);

Tailwind

colors: {
  custom: {
    50: '#6a68a2',
    500: '#23307b',
    950: '#000000',
  },
}

SCSS

$custom: #23307b;
$custom-light: #6a68a2;
$custom-dark: #000000;

JSON

{
  "hex": "#23307b",
  "rgb": {
    "r": 35,
    "g": 48,
    "b": 123
  },
  "hsl": {
    "h": 231.136,
    "s": 55.696,
    "l": 30.98
  },
  "oklch": {
    "l": 0.34758,
    "c": 0.1278,
    "h": 270.7
  },
  "luminance": 0.03901
}

Semantic roles & 50–950 ramp

primary

#23307B

secondary

#AE9F4C

accent

#C949DF

background

#F6F6FA

surface

#ECEBF3

border

#C7C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #23307B

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

Preview Lab → · Contrast checker → · Palette generator →