#233A99#233A99

#233A99 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.157 H 267.8°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#233A99
RGB	rgb(35, 58, 153)
HSL	hsl(228, 63%, 37%)
HSV	hsv(228, 77%, 60%)
CMYK	cmyk(77.1%, 62.1%, 0%, 40%)
CIE-LAB	lab(28.60, 26.47, -54.41)
CIE-LCH	lch(28.60, 60.51, 295.95°)
OKLab	oklab(39.46% -0.006 -0.1572)
OKLCH	oklch(39.46% 0.157 267.8)
XYZ	xyz(7.9540, 5.6825, 30.8084)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A99 #998223

analogous

#237599 #233A99 #472399

triadic

#233A99 #99233A #3A9923

tetradic

#233A99 #992375 #998223 #239947

square

#233A99 #992375 #998223 #239947

split-complementary

#233A99 #994723 #759923

monochromatic

#0C1435 #182767 #233A99 #2E4DCB #5D75DA

Accessibility & contrast

On white

9.83

#233A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#233A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A99

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A99	#FFFFFF	#000000	##FFFFFF
##233A99	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #233a99;
/* rgb */ color: rgb(35, 58, 153);
/* oklch */ color: oklch(39.5% 0.157 267.8);

Tailwind

colors: {
  custom: {
    50: '#716fb8',
    500: '#233a99',
    950: '#000000',
  },
}

SCSS

$custom: #233a99;
$custom-light: #716fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#233a99",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 153
  },
  "hsl": {
    "h": 228.305,
    "s": 62.766,
    "l": 36.863
  },
  "oklch": {
    "l": 0.39462,
    "c": 0.15734,
    "h": 267.8
  },
  "luminance": 0.05683
}

Semantic roles & 50–950 ramp

primary

#233A99

secondary

#BEAB59

accent

#C642E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #233A99

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

Preview Lab → · Contrast checker → · Palette generator →