#233F9F#233F9F

#233F9F is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.159 H 266.7°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#233F9F
RGB	rgb(35, 63, 159)
HSL	hsl(226, 64%, 38%)
HSV	hsv(226, 78%, 62%)
CMYK	cmyk(78%, 60.4%, 0%, 37.6%)
CIE-LAB	lab(30.44, 25.41, -55.05)
CIE-LCH	lch(30.44, 60.64, 294.78°)
OKLab	oklab(40.99% -0.0093 -0.1591)
OKLCH	oklch(40.99% 0.159 266.7)
XYZ	xyz(8.7265, 6.4146, 33.5724)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F9F #9F8323

analogous

#237D9F #233F9F #45239F

triadic

#233F9F #9F233F #3F9F23

tetradic

#233F9F #9F237D #9F8323 #239F45

square

#233F9F #9F237D #9F8323 #239F45

split-complementary

#233F9F #9F4523 #7D9F23

monochromatic

#0D173B #182B6D #233F9F #2E53D1 #607CDC

Accessibility & contrast

On white

9.20

#233F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#233F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F9F

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F9F	#FFFFFF	#000000	##FFFFFF
##233F9F	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA2

Deuteranopia (green-blind)

#00429D

Tritanopia (blue-blind)

#005768

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #233f9f;
/* rgb */ color: rgb(35, 63, 159);
/* oklch */ color: oklch(41.0% 0.159 266.7);

Tailwind

colors: {
  custom: {
    50: '#7273bc',
    500: '#233f9f',
    950: '#000000',
  },
}

SCSS

$custom: #233f9f;
$custom-light: #7273bc;
$custom-dark: #000000;

JSON

{
  "hex": "#233f9f",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 159
  },
  "hsl": {
    "h": 226.452,
    "s": 63.918,
    "l": 38.039
  },
  "oklch": {
    "l": 0.40989,
    "c": 0.15933,
    "h": 266.7
  },
  "luminance": 0.06416
}

Semantic roles & 50–950 ramp

primary

#233F9F

secondary

#C1AA5D

accent

#C141E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #233F9F

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

Preview Lab → · Contrast checker → · Palette generator →