#233D9C#233D9C

#233D9C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.3% C 0.158 H 267.1°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#233D9C
RGB	rgb(35, 61, 156)
HSL	hsl(227, 63%, 37%)
HSV	hsv(227, 78%, 61%)
CMYK	cmyk(77.6%, 60.9%, 0%, 38.8%)
CIE-LAB	lab(29.65, 25.60, -54.52)
CIE-LCH	lch(29.65, 60.23, 295.16°)
OKLab	oklab(40.32% -0.008 -0.1575)
OKLCH	oklch(40.32% 0.158 267.1)
XYZ	xyz(8.3605, 6.0942, 32.1817)
Luminance	0.0609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D9C #9C8223

analogous

#237A9C #233D9C #45239C

triadic

#233D9C #9C233D #3D9C23

tetradic

#233D9C #9C237A #9C8223 #239C45

square

#233D9C #9C237A #9C8223 #239C45

split-complementary

#233D9C #9C4523 #7A9C23

monochromatic

#0D1638 #18296A #233D9C #2E51CE #5E79DB

Accessibility & contrast

On white

9.46

#233D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#233D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D9C

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D9C	#FFFFFF	#000000	##FFFFFF
##233D9C	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9F

Deuteranopia (green-blind)

#00409A

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #233d9c;
/* rgb */ color: rgb(35, 61, 156);
/* oklch */ color: oklch(40.3% 0.158 267.1);

Tailwind

colors: {
  custom: {
    50: '#7172ba',
    500: '#233d9c',
    950: '#000000',
  },
}

SCSS

$custom: #233d9c;
$custom-light: #7172ba;
$custom-dark: #000000;

JSON

{
  "hex": "#233d9c",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 156
  },
  "hsl": {
    "h": 227.107,
    "s": 63.351,
    "l": 37.451
  },
  "oklch": {
    "l": 0.40324,
    "c": 0.15771,
    "h": 267.1
  },
  "luminance": 0.06095
}

Semantic roles & 50–950 ramp

primary

#233D9C

secondary

#C0AA5B

accent

#C341E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233D9C

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

Preview Lab → · Contrast checker → · Palette generator →