#233B9F#233B9F

#233B9F is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.164 H 267.7°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#233B9F
RGB	rgb(35, 59, 159)
HSL	hsl(228, 64%, 38%)
HSV	hsv(228, 78%, 62%)
CMYK	cmyk(78%, 62.9%, 0%, 37.6%)
CIE-LAB	lab(29.38, 28.10, -56.78)
CIE-LCH	lch(29.38, 63.35, 296.33°)
OKLab	oklab(40.21% -0.0067 -0.1642)
OKLCH	oklch(40.21% 0.164 267.7)
XYZ	xyz(8.5129, 5.9875, 33.5012)
Luminance	0.0599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B9F #9F8723

analogous

#23799F #233B9F #49239F

triadic

#233B9F #9F233B #3B9F23

tetradic

#233B9F #9F2379 #9F8723 #239F49

square

#233B9F #9F2379 #9F8723 #239F49

split-complementary

#233B9F #9F4923 #799F23

monochromatic

#0D163B #18286D #233B9F #2E4ED1 #6078DC

Accessibility & contrast

On white

9.56

#233B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#233B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B9F

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B9F	#FFFFFF	#000000	##FFFFFF
##233B9F	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #233b9f;
/* rgb */ color: rgb(35, 59, 159);
/* oklch */ color: oklch(40.2% 0.164 267.7);

Tailwind

colors: {
  custom: {
    50: '#7270bc',
    500: '#233b9f',
    950: '#000000',
  },
}

SCSS

$custom: #233b9f;
$custom-light: #7270bc;
$custom-dark: #000000;

JSON

{
  "hex": "#233b9f",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 159
  },
  "hsl": {
    "h": 228.387,
    "s": 63.918,
    "l": 38.039
  },
  "oklch": {
    "l": 0.40205,
    "c": 0.1643,
    "h": 267.7
  },
  "luminance": 0.05988
}

Semantic roles & 50–950 ramp

primary

#233B9F

secondary

#C1AE5D

accent

#C741E7

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233B9F

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

Preview Lab → · Contrast checker → · Palette generator →