#233B99#233B99

#233B99 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.156 H 267.6°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#233B99
RGB	rgb(35, 59, 153)
HSL	hsl(228, 63%, 37%)
HSV	hsv(228, 77%, 60%)
CMYK	cmyk(77.1%, 61.4%, 0%, 40%)
CIE-LAB	lab(28.86, 25.80, -53.98)
CIE-LCH	lch(28.86, 59.83, 295.55°)
OKLab	oklab(39.66% -0.0066 -0.1559)
OKLCH	oklch(39.66% 0.156 267.6)
XYZ	xyz(8.0049, 5.7843, 30.8254)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B99 #998123

analogous

#237699 #233B99 #462399

triadic

#233B99 #99233B #3B9923

tetradic

#233B99 #992376 #998123 #239946

square

#233B99 #992376 #998123 #239946

split-complementary

#233B99 #994623 #769923

monochromatic

#0C1535 #182867 #233B99 #2E4ECB #5D76DA

Accessibility & contrast

On white

9.74

#233B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#233B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B99

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B99	#FFFFFF	#000000	##FFFFFF
##233B99	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9C

Deuteranopia (green-blind)

#003F97

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #233b99;
/* rgb */ color: rgb(35, 59, 153);
/* oklch */ color: oklch(39.7% 0.156 267.6);

Tailwind

colors: {
  custom: {
    50: '#7170b8',
    500: '#233b99',
    950: '#000000',
  },
}

SCSS

$custom: #233b99;
$custom-light: #7170b8;
$custom-dark: #000000;

JSON

{
  "hex": "#233b99",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 153
  },
  "hsl": {
    "h": 227.797,
    "s": 62.766,
    "l": 36.863
  },
  "oklch": {
    "l": 0.39659,
    "c": 0.15609,
    "h": 267.6
  },
  "luminance": 0.05785
}

Semantic roles & 50–950 ramp

primary

#233B99

secondary

#BEAA59

accent

#C442E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #233B99

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

Preview Lab → · Contrast checker → · Palette generator →