#233FA4#233FA4

#233FA4 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.4% C 0.166 H 266.8°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#233FA4
RGB	rgb(35, 63, 164)
HSL	hsl(227, 65%, 39%)
HSV	hsv(227, 79%, 64%)
CMYK	cmyk(78.7%, 61.6%, 0%, 35.7%)
CIE-LAB	lab(30.86, 27.34, -57.38)
CIE-LCH	lch(30.86, 63.56, 295.47°)
OKLab	oklab(41.44% -0.0092 -0.1659)
OKLCH	oklch(41.44% 0.166 266.8)
XYZ	xyz(9.1691, 6.5916, 35.9038)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233FA4 #A48823

analogous

#2380A4 #233FA4 #4823A4

triadic

#233FA4 #A4233F #3FA423

tetradic

#233FA4 #A42380 #A48823 #23A448

square

#233FA4 #A42380 #A48823 #23A448

split-complementary

#233FA4 #A44823 #80A423

monochromatic

#0D183F #182C72 #233FA4 #3154D3 #647EDE

Accessibility & contrast

On white

9.06

#233FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#233FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233FA4

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233FA4	#FFFFFF	#000000	##FFFFFF
##233FA4	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA7

Deuteranopia (green-blind)

#0043A2

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #233fa4;
/* rgb */ color: rgb(35, 63, 164);
/* oklch */ color: oklch(41.4% 0.166 266.8);

Tailwind

colors: {
  custom: {
    50: '#7373c0',
    500: '#233fa4',
    950: '#000000',
  },
}

SCSS

$custom: #233fa4;
$custom-light: #7373c0;
$custom-dark: #000000;

JSON

{
  "hex": "#233fa4",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 164
  },
  "hsl": {
    "h": 226.977,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.41435,
    "c": 0.16615,
    "h": 266.8
  },
  "luminance": 0.06593
}

Semantic roles & 50–950 ramp

primary

#233FA4

secondary

#C3AE60

accent

#C340E8

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #233FA4

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

Preview Lab → · Contrast checker → · Palette generator →