#233B9C#233B9C

#233B9C is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.160 H 267.6°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#233B9C
RGB	rgb(35, 59, 156)
HSL	hsl(228, 63%, 37%)
HSV	hsv(228, 78%, 61%)
CMYK	cmyk(77.6%, 62.2%, 0%, 38.8%)
CIE-LAB	lab(29.12, 26.95, -55.38)
CIE-LCH	lch(29.12, 61.59, 295.95°)
OKLab	oklab(39.93% -0.0066 -0.1601)
OKLCH	oklch(39.93% 0.16 267.6)
XYZ	xyz(8.2558, 5.8846, 32.1468)
Luminance	0.0589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B9C #9C8423

analogous

#23789C #233B9C #47239C

triadic

#233B9C #9C233B #3B9C23

tetradic

#233B9C #9C2378 #9C8423 #239C47

square

#233B9C #9C2378 #9C8423 #239C47

split-complementary

#233B9C #9C4723 #789C23

monochromatic

#0D1538 #18286A #233B9C #2E4ECE #5E77DB

Accessibility & contrast

On white

9.65

#233B9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#233B9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B9C

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B9C	#FFFFFF	#000000	##FFFFFF
##233B9C	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9F

Deuteranopia (green-blind)

#003F9A

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #233b9c;
/* rgb */ color: rgb(35, 59, 156);
/* oklch */ color: oklch(39.9% 0.160 267.6);

Tailwind

colors: {
  custom: {
    50: '#7270ba',
    500: '#233b9c',
    950: '#000000',
  },
}

SCSS

$custom: #233b9c;
$custom-light: #7270ba;
$custom-dark: #000000;

JSON

{
  "hex": "#233b9c",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 156
  },
  "hsl": {
    "h": 228.099,
    "s": 63.351,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39931,
    "c": 0.16021,
    "h": 267.6
  },
  "luminance": 0.05886
}

Semantic roles & 50–950 ramp

primary

#233B9C

secondary

#C0AC5B

accent

#C641E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233B9C

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

Preview Lab → · Contrast checker → · Palette generator →