#233F9A#233F9A

#233F9A is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.152 H 266.4°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#233F9A
RGB	rgb(35, 63, 154)
HSL	hsl(226, 63%, 37%)
HSV	hsv(226, 77%, 60%)
CMYK	cmyk(77.3%, 59.1%, 0%, 39.6%)
CIE-LAB	lab(30.02, 23.47, -52.70)
CIE-LCH	lch(30.02, 57.69, 294.01°)
OKLab	oklab(40.55% -0.0094 -0.1521)
OKLCH	oklch(40.55% 0.152 266.4)
XYZ	xyz(8.3013, 6.2445, 31.3334)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F9A #9A7E23

analogous

#237B9A #233F9A #42239A

triadic

#233F9A #9A233F #3F9A23

tetradic

#233F9A #9A237B #9A7E23 #239A42

square

#233F9A #9A237B #9A7E23 #239A42

split-complementary

#233F9A #9A4223 #7B9A23

monochromatic

#0C1636 #182B68 #233F9A #2E53CC #5D7BDA

Accessibility & contrast

On white

9.34

#233F9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#233F9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F9A

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F9A	#FFFFFF	#000000	##FFFFFF
##233F9A	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9D

Deuteranopia (green-blind)

#004198

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #233f9a;
/* rgb */ color: rgb(35, 63, 154);
/* oklch */ color: oklch(40.6% 0.152 266.4);

Tailwind

colors: {
  custom: {
    50: '#7173b9',
    500: '#233f9a',
    950: '#000000',
  },
}

SCSS

$custom: #233f9a;
$custom-light: #7173b9;
$custom-dark: #000000;

JSON

{
  "hex": "#233f9a",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 154
  },
  "hsl": {
    "h": 225.882,
    "s": 62.963,
    "l": 37.059
  },
  "oklch": {
    "l": 0.4055,
    "c": 0.15242,
    "h": 266.4
  },
  "luminance": 0.06245
}

Semantic roles & 50–950 ramp

primary

#233F9A

secondary

#BFA75A

accent

#BF42E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #233F9A

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

Preview Lab → · Contrast checker → · Palette generator →