#233583#233583

#233583 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.5% C 0.133 H 268.9°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#233583
RGB	rgb(35, 53, 131)
HSL	hsl(229, 58%, 33%)
HSV	hsv(229, 73%, 51%)
CMYK	cmyk(73.3%, 59.5%, 0%, 48.6%)
CIE-LAB	lab(25.39, 21.37, -46.05)
CIE-LCH	lch(25.39, 50.77, 294.90°)
OKLab	oklab(36.49% -0.0024 -0.1327)
OKLCH	oklch(36.49% 0.133 268.9)
XYZ	xyz(6.0616, 4.5416, 22.0255)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233583 #837123

analogous

#236583 #233583 #412383

triadic

#233583 #832335 #358323

tetradic

#233583 #832365 #837123 #238341

square

#233583 #832365 #837123 #238341

split-complementary

#233583 #834123 #658323

monochromatic

#090E22 #162153 #233583 #3049B3 #5068D0

Accessibility & contrast

On white

11.00

#233583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#233583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233583

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233583	#FFFFFF	#000000	##FFFFFF
##233583	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004186

Deuteranopia (green-blind)

#003881

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #233583;
/* rgb */ color: rgb(35, 53, 131);
/* oklch */ color: oklch(36.5% 0.133 268.9);

Tailwind

colors: {
  custom: {
    50: '#6c6ca8',
    500: '#233583',
    950: '#000000',
  },
}

SCSS

$custom: #233583;
$custom-light: #6c6ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#233583",
  "rgb": {
    "r": 35,
    "g": 53,
    "b": 131
  },
  "hsl": {
    "h": 228.75,
    "s": 57.831,
    "l": 32.549
  },
  "oklch": {
    "l": 0.36492,
    "c": 0.13277,
    "h": 268.9
  },
  "luminance": 0.04542
}

Semantic roles & 50–950 ramp

primary

#233583

secondary

#B4A14E

accent

#C447E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #233583

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

Preview Lab → · Contrast checker → · Palette generator →