#233A9A#233A9A

#233A9A is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.6% C 0.159 H 267.8°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#233A9A
RGB	rgb(35, 58, 154)
HSL	hsl(228, 63%, 37%)
HSV	hsv(228, 77%, 60%)
CMYK	cmyk(77.3%, 62.3%, 0%, 39.6%)
CIE-LAB	lab(28.68, 26.86, -54.88)
CIE-LCH	lch(28.68, 61.10, 296.08°)
OKLab	oklab(39.55% -0.006 -0.1586)
OKLCH	oklch(39.55% 0.159 267.8)
XYZ	xyz(8.0369, 5.7156, 31.2452)
Luminance	0.0572 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A9A #9A8323

analogous

#23769A #233A9A #47239A

triadic

#233A9A #9A233A #3A9A23

tetradic

#233A9A #9A2376 #9A8323 #239A47

square

#233A9A #9A2376 #9A8323 #239A47

split-complementary

#233A9A #9A4723 #769A23

monochromatic

#0C1436 #182768 #233A9A #2E4DCC #5D75DA

Accessibility & contrast

On white

9.80

#233A9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#233A9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A9A

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A9A	#FFFFFF	#000000	##FFFFFF
##233A9A	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499D

Deuteranopia (green-blind)

#003E98

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #233a9a;
/* rgb */ color: rgb(35, 58, 154);
/* oklch */ color: oklch(39.6% 0.159 267.8);

Tailwind

colors: {
  custom: {
    50: '#716fb9',
    500: '#233a9a',
    950: '#000000',
  },
}

SCSS

$custom: #233a9a;
$custom-light: #716fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#233a9a",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 154
  },
  "hsl": {
    "h": 228.403,
    "s": 62.963,
    "l": 37.059
  },
  "oklch": {
    "l": 0.39553,
    "c": 0.15871,
    "h": 267.8
  },
  "luminance": 0.05717
}

Semantic roles & 50–950 ramp

primary

#233A9A

secondary

#BFAB5A

accent

#C642E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #233A9A

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

Preview Lab → · Contrast checker → · Palette generator →