#23308B#23308B

#23308B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.2% C 0.151 H 270.5°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#23308B
RGB	rgb(35, 48, 139)
HSL	hsl(233, 60%, 34%)
HSV	hsv(233, 75%, 55%)
CMYK	cmyk(74.8%, 65.5%, 0%, 45.5%)
CIE-LAB	lab(24.75, 27.87, -52.08)
CIE-LCH	lch(24.75, 59.07, 298.15°)
OKLab	oklab(36.24% 0.0013 -0.1505)
OKLCH	oklch(36.24% 0.151 270.5)
XYZ	xyz(6.4087, 4.3346, 24.9200)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23308B #8B7E23

analogous

#23648B #23308B #4A238B

triadic

#23308B #8B2330 #308B23

tetradic

#23308B #8B2364 #8B7E23 #238B4A

square

#23308B #8B2364 #8B7E23 #238B4A

split-complementary

#23308B #8B4A23 #648B23

monochromatic

#0A0E29 #171F5A #23308B #2F41BC #5464D4

Accessibility & contrast

On white

11.25

#23308B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#23308B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23308B

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23308B	#FFFFFF	#000000	##FFFFFF
##23308B	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #23308b;
/* rgb */ color: rgb(35, 48, 139);
/* oklch */ color: oklch(36.2% 0.151 270.5);

Tailwind

colors: {
  custom: {
    50: '#6e68ae',
    500: '#23308b',
    950: '#000000',
  },
}

SCSS

$custom: #23308b;
$custom-light: #6e68ae;
$custom-dark: #000000;

JSON

{
  "hex": "#23308b",
  "rgb": {
    "r": 35,
    "g": 48,
    "b": 139
  },
  "hsl": {
    "h": 232.5,
    "s": 59.77,
    "l": 34.118
  },
  "oklch": {
    "l": 0.36236,
    "c": 0.15052,
    "h": 270.5
  },
  "luminance": 0.04335
}

Semantic roles & 50–950 ramp

primary

#23308B

secondary

#B8AB52

accent

#CF45E3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #23308B

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

Preview Lab → · Contrast checker → · Palette generator →