#23289B#23289B

#23289B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.5% C 0.181 H 271.3°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#23289B
RGB	rgb(35, 40, 155)
HSL	hsl(238, 63%, 37%)
HSV	hsv(238, 77%, 61%)
CMYK	cmyk(77.4%, 74.2%, 0%, 39.2%)
CIE-LAB	lab(24.45, 38.82, -62.44)
CIE-LCH	lch(24.45, 73.52, 301.87°)
OKLab	oklab(36.5% 0.0041 -0.1808)
OKLCH	oklch(36.5% 0.181 271.3)
XYZ	xyz(7.3663, 4.2407, 31.4343)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23289B #9B9623

analogous

#23649B #23289B #5A239B

triadic

#23289B #9B2328 #289B23

tetradic

#23289B #9B2364 #9B9623 #239B5A

square

#23289B #9B2364 #9B9623 #239B5A

split-complementary

#23289B #9B5A23 #649B23

monochromatic

#0C0E37 #181B69 #23289B #2E35CD #5E63DB

Accessibility & contrast

On white

11.36

#23289B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#23289B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23289B

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23289B	#FFFFFF	#000000	##FFFFFF
##23289B	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00409E

Deuteranopia (green-blind)

#003499

Tritanopia (blue-blind)

#00495F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #23289b;
/* rgb */ color: rgb(35, 40, 155);
/* oklch */ color: oklch(36.5% 0.181 271.3);

Tailwind

colors: {
  custom: {
    50: '#7363ba',
    500: '#23289b',
    950: '#000000',
  },
}

SCSS

$custom: #23289b;
$custom-light: #7363ba;
$custom-dark: #000000;

JSON

{
  "hex": "#23289b",
  "rgb": {
    "r": 35,
    "g": 40,
    "b": 155
  },
  "hsl": {
    "h": 237.5,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36501,
    "c": 0.18082,
    "h": 271.3
  },
  "luminance": 0.04241
}

Semantic roles & 50–950 ramp

primary

#23289B

secondary

#BFBB5A

accent

#DF42E6

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #23289B

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

Preview Lab → · Contrast checker → · Palette generator →