#233F9E#233F9E

#233F9E is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.9% C 0.158 H 266.6°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#233F9E
RGB	rgb(35, 63, 158)
HSL	hsl(226, 64%, 38%)
HSV	hsv(226, 78%, 62%)
CMYK	cmyk(77.8%, 60.1%, 0%, 38%)
CIE-LAB	lab(30.35, 25.03, -54.59)
CIE-LCH	lch(30.35, 60.05, 294.63°)
OKLab	oklab(40.9% -0.0093 -0.1577)
OKLCH	oklch(40.9% 0.158 266.6)
XYZ	xyz(8.6400, 6.3800, 33.1172)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F9E #9E8223

analogous

#237D9E #233F9E #44239E

triadic

#233F9E #9E233F #3F9E23

tetradic

#233F9E #9E237D #9E8223 #239E44

square

#233F9E #9E237D #9E8223 #239E44

split-complementary

#233F9E #9E4423 #7D9E23

monochromatic

#0D173A #182B6C #233F9E #2E53D0 #607CDC

Accessibility & contrast

On white

9.23

#233F9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#233F9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F9E

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F9E	#FFFFFF	#000000	##FFFFFF
##233F9E	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA1

Deuteranopia (green-blind)

#00429C

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #233f9e;
/* rgb */ color: rgb(35, 63, 158);
/* oklch */ color: oklch(40.9% 0.158 266.6);

Tailwind

colors: {
  custom: {
    50: '#7273bb',
    500: '#233f9e',
    950: '#000000',
  },
}

SCSS

$custom: #233f9e;
$custom-light: #7273bb;
$custom-dark: #000000;

JSON

{
  "hex": "#233f9e",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 158
  },
  "hsl": {
    "h": 226.341,
    "s": 63.731,
    "l": 37.843
  },
  "oklch": {
    "l": 0.409,
    "c": 0.15796,
    "h": 266.6
  },
  "luminance": 0.06381
}

Semantic roles & 50–950 ramp

primary

#233F9E

secondary

#C1AA5C

accent

#C141E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #233F9E

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

Preview Lab → · Contrast checker → · Palette generator →