#233AA4#233AA4

#233AA4 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.172 H 267.9°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#233AA4
RGB	rgb(35, 58, 164)
HSL	hsl(229, 65%, 39%)
HSV	hsv(229, 79%, 64%)
CMYK	cmyk(78.7%, 64.6%, 0%, 35.7%)
CIE-LAB	lab(29.57, 30.67, -59.49)
CIE-LCH	lch(29.57, 66.93, 297.27°)
OKLab	oklab(40.48% -0.0062 -0.1721)
OKLCH	oklch(40.48% 0.172 267.9)
XYZ	xyz(8.9047, 6.0628, 35.8157)
Luminance	0.0606 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233AA4 #A48D23

analogous

#237BA4 #233AA4 #4D23A4

triadic

#233AA4 #A4233A #3AA423

tetradic

#233AA4 #A4237B #A48D23 #23A44D

square

#233AA4 #A4237B #A48D23 #23A44D

split-complementary

#233AA4 #A44D23 #7BA423

monochromatic

#0D163F #182872 #233AA4 #314ED3 #6479DE

Accessibility & contrast

On white

9.49

#233AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#233AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233AA4

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233AA4	#FFFFFF	#000000	##FFFFFF
##233AA4	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA7

Deuteranopia (green-blind)

#0040A2

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #233aa4;
/* rgb */ color: rgb(35, 58, 164);
/* oklch */ color: oklch(40.5% 0.172 267.9);

Tailwind

colors: {
  custom: {
    50: '#7470c0',
    500: '#233aa4',
    950: '#000000',
  },
}

SCSS

$custom: #233aa4;
$custom-light: #7470c0;
$custom-dark: #000000;

JSON

{
  "hex": "#233aa4",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 164
  },
  "hsl": {
    "h": 229.302,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40482,
    "c": 0.17223,
    "h": 267.9
  },
  "luminance": 0.06064
}

Semantic roles & 50–950 ramp

primary

#233AA4

secondary

#C3B160

accent

#CA40E8

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #233AA4

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

Preview Lab → · Contrast checker → · Palette generator →