#233C9F#233C9F

#233C9F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.163 H 267.4°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#233C9F
RGB	rgb(35, 60, 159)
HSL	hsl(228, 64%, 38%)
HSV	hsv(228, 78%, 62%)
CMYK	cmyk(78%, 62.3%, 0%, 37.6%)
CIE-LAB	lab(29.64, 27.43, -56.35)
CIE-LCH	lch(29.64, 62.67, 295.96°)
OKLab	oklab(40.4% -0.0073 -0.1629)
OKLCH	oklch(40.4% 0.163 267.4)
XYZ	xyz(8.5648, 6.0913, 33.5185)
Luminance	0.0609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C9F #9F8623

analogous

#237A9F #233C9F #48239F

triadic

#233C9F #9F233C #3C9F23

tetradic

#233C9F #9F237A #9F8623 #239F48

square

#233C9F #9F237A #9F8623 #239F48

split-complementary

#233C9F #9F4823 #7A9F23

monochromatic

#0D163B #18296D #233C9F #2E4FD1 #6079DC

Accessibility & contrast

On white

9.47

#233C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#233C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C9F

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C9F	#FFFFFF	#000000	##FFFFFF
##233C9F	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #233c9f;
/* rgb */ color: rgb(35, 60, 159);
/* oklch */ color: oklch(40.4% 0.163 267.4);

Tailwind

colors: {
  custom: {
    50: '#7271bc',
    500: '#233c9f',
    950: '#000000',
  },
}

SCSS

$custom: #233c9f;
$custom-light: #7271bc;
$custom-dark: #000000;

JSON

{
  "hex": "#233c9f",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 159
  },
  "hsl": {
    "h": 227.903,
    "s": 63.918,
    "l": 38.039
  },
  "oklch": {
    "l": 0.40398,
    "c": 0.16306,
    "h": 267.4
  },
  "luminance": 0.06092
}

Semantic roles & 50–950 ramp

primary

#233C9F

secondary

#C1AD5D

accent

#C541E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233C9F

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

Preview Lab → · Contrast checker → · Palette generator →