#233D8D#233D8D

#233D8D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.0% C 0.137 H 266.4°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#233D8D
RGB	rgb(35, 61, 141)
HSL	hsl(225, 60%, 35%)
HSV	hsv(225, 75%, 55%)
CMYK	cmyk(75.2%, 56.7%, 0%, 44.7%)
CIE-LAB	lab(28.43, 19.76, -47.33)
CIE-LCH	lch(28.43, 51.29, 292.66°)
OKLab	oklab(39.03% -0.0086 -0.1364)
OKLCH	oklch(39.03% 0.137 266.4)
XYZ	xyz(7.1679, 5.6171, 25.9006)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D8D #8D7323

analogous

#23728D #233D8D #3E238D

triadic

#233D8D #8D233D #3D8D23

tetradic

#233D8D #8D2372 #8D7323 #238D3E

square

#233D8D #8D2372 #8D7323 #238D3E

split-complementary

#233D8D #8D3E23 #728D23

monochromatic

#0B132B #17285C #233D8D #2F52BE #5575D5

Accessibility & contrast

On white

9.89

#233D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#233D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D8D

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D8D	#FFFFFF	#000000	##FFFFFF
##233D8D	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #233d8d;
/* rgb */ color: rgb(35, 61, 141);
/* oklch */ color: oklch(39.0% 0.137 266.4);

Tailwind

colors: {
  custom: {
    50: '#6e72af',
    500: '#233d8d',
    950: '#000000',
  },
}

SCSS

$custom: #233d8d;
$custom-light: #6e72af;
$custom-dark: #000000;

JSON

{
  "hex": "#233d8d",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 141
  },
  "hsl": {
    "h": 225.283,
    "s": 60.227,
    "l": 34.51
  },
  "oklch": {
    "l": 0.39025,
    "c": 0.13665,
    "h": 266.4
  },
  "luminance": 0.05618
}

Semantic roles & 50–950 ramp

primary

#233D8D

secondary

#B9A053

accent

#BC44E3

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233D8D

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

Preview Lab → · Contrast checker → · Palette generator →