#23288B#23288B

#23288B is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.8% C 0.160 H 272.3°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#23288B
RGB	rgb(35, 40, 139)
HSL	hsl(237, 60%, 34%)
HSV	hsv(237, 75%, 55%)
CMYK	cmyk(74.8%, 71.2%, 0%, 45.5%)
CIE-LAB	lab(22.79, 33.12, -55.30)
CIE-LCH	lch(22.79, 64.46, 300.92°)
OKLab	oklab(34.81% 0.0065 -0.16)
OKLCH	oklch(34.81% 0.16 272.3)
XYZ	xyz(6.1106, 3.7384, 24.8206)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23288B #8B8623

analogous

#235C8B #23288B #52238B

triadic

#23288B #8B2328 #288B23

tetradic

#23288B #8B235C #8B8623 #238B52

square

#23288B #8B235C #8B8623 #238B52

split-complementary

#23288B #8B5223 #5C8B23

monochromatic

#0A0C29 #171A5A #23288B #2F36BC #545BD4

Accessibility & contrast

On white

12.02

#23288B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#23288B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23288B

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23288B	#FFFFFF	#000000	##FFFFFF
##23288B	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8E

Deuteranopia (green-blind)

#003189

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #23288b;
/* rgb */ color: rgb(35, 40, 139);
/* oklch */ color: oklch(34.8% 0.160 272.3);

Tailwind

colors: {
  custom: {
    50: '#6f62ae',
    500: '#23288b',
    950: '#000000',
  },
}

SCSS

$custom: #23288b;
$custom-light: #6f62ae;
$custom-dark: #000000;

JSON

{
  "hex": "#23288b",
  "rgb": {
    "r": 35,
    "g": 40,
    "b": 139
  },
  "hsl": {
    "h": 237.115,
    "s": 59.77,
    "l": 34.118
  },
  "oklch": {
    "l": 0.34808,
    "c": 0.16009,
    "h": 272.3
  },
  "luminance": 0.03739
}

Semantic roles & 50–950 ramp

primary

#23288B

secondary

#B8B352

accent

#DB45E3

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #23288B

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

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