#4233AB#4233AB

#4233AB is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.9% C 0.182 H 280.8°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#4233AB
RGB	rgb(66, 51, 171)
HSL	hsl(248, 54%, 44%)
HSV	hsv(248, 70%, 67%)
CMYK	cmyk(61.4%, 70.2%, 0%, 32.9%)
CIE-LAB	lab(30.56, 41.34, -62.01)
CIE-LCH	lch(30.56, 74.52, 303.69°)
OKLab	oklab(41.91% 0.034 -0.1787)
OKLCH	oklch(41.91% 0.182 280.8)
XYZ	xyz(10.7790, 6.4654, 39.2001)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4233AB #9CAB33

analogous

#3360AB #4233AB #7E33AB

triadic

#4233AB #AB4233 #33AB42

tetradic

#4233AB #AB3360 #9CAB33 #33AB7E

square

#4233AB #AB3360 #9CAB33 #33AB7E

split-complementary

#4233AB #AB7E33 #60AB33

monochromatic

#1E174D #30257C #4233AB #6050CB #8B7FD9

Accessibility & contrast

On white

9.16

#4233AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#4233AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4233AB

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4233AB	#FFFFFF	#000000	##FFFFFF
##4233AB	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAF

Deuteranopia (green-blind)

#0043A9

Tritanopia (blue-blind)

#00536B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #4233ab;
/* rgb */ color: rgb(66, 51, 171);
/* oklch */ color: oklch(41.9% 0.182 280.8);

Tailwind

colors: {
  custom: {
    50: '#836cc5',
    500: '#4233ab',
    950: '#000000',
  },
}

SCSS

$custom: #4233ab;
$custom-light: #836cc5;
$custom-dark: #000000;

JSON

{
  "hex": "#4233ab",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 171
  },
  "hsl": {
    "h": 247.5,
    "s": 54.054,
    "l": 43.529
  },
  "oklch": {
    "l": 0.4191,
    "c": 0.18192,
    "h": 280.8
  },
  "luminance": 0.06466
}

Semantic roles & 50–950 ramp

primary

#4233AB

secondary

#B9C278

accent

#DD4ACB

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4233AB

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

Preview Lab → · Contrast checker → · Palette generator →