#233B9A#233B9A

#233B9A is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.157 H 267.6°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#233B9A
RGB	rgb(35, 59, 154)
HSL	hsl(228, 63%, 37%)
HSV	hsv(228, 77%, 60%)
CMYK	cmyk(77.3%, 61.7%, 0%, 39.6%)
CIE-LAB	lab(28.95, 26.18, -54.45)
CIE-LCH	lch(28.95, 60.42, 295.68°)
OKLab	oklab(39.75% -0.0066 -0.1573)
OKLCH	oklch(39.75% 0.157 267.6)
XYZ	xyz(8.0878, 5.8175, 31.2622)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B9A #9A8223

analogous

#23779A #233B9A #47239A

triadic

#233B9A #9A233B #3B9A23

tetradic

#233B9A #9A2377 #9A8223 #239A47

square

#233B9A #9A2377 #9A8223 #239A47

split-complementary

#233B9A #9A4723 #779A23

monochromatic

#0C1536 #182868 #233B9A #2E4ECC #5D76DA

Accessibility & contrast

On white

9.71

#233B9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#233B9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B9A

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B9A	#FFFFFF	#000000	##FFFFFF
##233B9A	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9D

Deuteranopia (green-blind)

#003F98

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #233b9a;
/* rgb */ color: rgb(35, 59, 154);
/* oklch */ color: oklch(39.7% 0.157 267.6);

Tailwind

colors: {
  custom: {
    50: '#7170b9',
    500: '#233b9a',
    950: '#000000',
  },
}

SCSS

$custom: #233b9a;
$custom-light: #7170b9;
$custom-dark: #000000;

JSON

{
  "hex": "#233b9a",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 154
  },
  "hsl": {
    "h": 227.899,
    "s": 62.963,
    "l": 37.059
  },
  "oklch": {
    "l": 0.39749,
    "c": 0.15747,
    "h": 267.6
  },
  "luminance": 0.05818
}

Semantic roles & 50–950 ramp

primary

#233B9A

secondary

#BFAB5A

accent

#C542E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #233B9A

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

Preview Lab → · Contrast checker → · Palette generator →