#233FA0#233FA0

#233FA0 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.1% C 0.161 H 266.7°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#233FA0
RGB	rgb(35, 63, 160)
HSL	hsl(227, 64%, 38%)
HSV	hsv(227, 78%, 63%)
CMYK	cmyk(78.1%, 60.6%, 0%, 37.3%)
CIE-LAB	lab(30.52, 25.80, -55.52)
CIE-LCH	lch(30.52, 61.22, 294.92°)
OKLab	oklab(41.08% -0.0093 -0.1604)
OKLCH	oklch(41.08% 0.161 266.7)
XYZ	xyz(8.8136, 6.4494, 34.0312)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233FA0 #A08423

analogous

#237DA0 #233FA0 #4523A0

triadic

#233FA0 #A0233F #3FA023

tetradic

#233FA0 #A0237D #A08423 #23A045

square

#233FA0 #A0237D #A08423 #23A045

split-complementary

#233FA0 #A04523 #7DA023

monochromatic

#0D173C #182B6E #233FA0 #2F53D1 #617DDC

Accessibility & contrast

On white

9.17

#233FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#233FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233FA0

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233FA0	#FFFFFF	#000000	##FFFFFF
##233FA0	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA3

Deuteranopia (green-blind)

#00429E

Tritanopia (blue-blind)

#005869

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #233fa0;
/* rgb */ color: rgb(35, 63, 160);
/* oklch */ color: oklch(41.1% 0.161 266.7);

Tailwind

colors: {
  custom: {
    50: '#7273bd',
    500: '#233fa0',
    950: '#000000',
  },
}

SCSS

$custom: #233fa0;
$custom-light: #7273bd;
$custom-dark: #000000;

JSON

{
  "hex": "#233fa0",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 160
  },
  "hsl": {
    "h": 226.56,
    "s": 64.103,
    "l": 38.235
  },
  "oklch": {
    "l": 0.41077,
    "c": 0.1607,
    "h": 266.7
  },
  "luminance": 0.0645
}

Semantic roles & 50–950 ramp

primary

#233FA0

secondary

#C1AB5D

accent

#C241E7

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #233FA0

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

Preview Lab → · Contrast checker → · Palette generator →