#233B91#233B91

#233B91 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.0% C 0.145 H 267.3°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#233B91
RGB	rgb(35, 59, 145)
HSL	hsl(227, 61%, 35%)
HSV	hsv(227, 76%, 57%)
CMYK	cmyk(75.9%, 59.3%, 0%, 43.1%)
CIE-LAB	lab(28.19, 22.70, -50.17)
CIE-LCH	lch(28.19, 55.07, 294.34°)
OKLab	oklab(38.95% -0.0068 -0.1448)
OKLCH	oklch(38.95% 0.145 267.3)
XYZ	xyz(7.3662, 5.5288, 27.4615)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B91 #917923

analogous

#237291 #233B91 #422391

triadic

#233B91 #91233B #3B9123

tetradic

#233B91 #912372 #917923 #239142

square

#233B91 #912372 #917923 #239142

split-complementary

#233B91 #914223 #729123

monochromatic

#0B132E #172760 #233B91 #2F4FC2 #5873D7

Accessibility & contrast

On white

9.97

#233B91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#233B91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B91

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B91	#FFFFFF	#000000	##FFFFFF
##233B91	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004894

Deuteranopia (green-blind)

#003E8F

Tritanopia (blue-blind)

#005060

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233b91;
/* rgb */ color: rgb(35, 59, 145);
/* oklch */ color: oklch(39.0% 0.145 267.3);

Tailwind

colors: {
  custom: {
    50: '#6f70b2',
    500: '#233b91',
    950: '#000000',
  },
}

SCSS

$custom: #233b91;
$custom-light: #6f70b2;
$custom-dark: #000000;

JSON

{
  "hex": "#233b91",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 145
  },
  "hsl": {
    "h": 226.909,
    "s": 61.111,
    "l": 35.294
  },
  "oklch": {
    "l": 0.3895,
    "c": 0.14494,
    "h": 267.3
  },
  "luminance": 0.0553
}

Semantic roles & 50–950 ramp

primary

#233B91

secondary

#BBA555

accent

#C144E4

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #233B91

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

Preview Lab → · Contrast checker → · Palette generator →