#4233B1#4233B1

#4233B1 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.5% C 0.189 H 280.0°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#4233B1
RGB	rgb(66, 51, 177)
HSL	hsl(247, 55%, 45%)
HSV	hsv(247, 71%, 69%)
CMYK	cmyk(62.7%, 71.2%, 0%, 30.6%)
CIE-LAB	lab(31.11, 43.25, -64.68)
CIE-LCH	lch(31.11, 77.81, 303.77°)
OKLab	oklab(42.48% 0.0329 -0.1866)
OKLCH	oklch(42.48% 0.189 280)
XYZ	xyz(11.3639, 6.6994, 42.2807)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 4.15

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4233B1 #A2B133

analogous

#3363B1 #4233B1 #8133B1

triadic

#4233B1 #B14233 #33B142

tetradic

#4233B1 #B13363 #A2B133 #33B181

square

#4233B1 #B13363 #A2B133 #33B181

split-complementary

#4233B1 #B18133 #63B133

monochromatic

#1F1852 #302581 #4233B1 #6254CE #8E83DB

Accessibility & contrast

On white

8.97

#4233B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#4233B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4233B1

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4233B1	#FFFFFF	#000000	##FFFFFF
##4233B1	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB5

Deuteranopia (green-blind)

#0044AF

Tritanopia (blue-blind)

#00556E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #4233b1;
/* rgb */ color: rgb(66, 51, 177);
/* oklch */ color: oklch(42.5% 0.189 280.0);

Tailwind

colors: {
  custom: {
    50: '#846cc9',
    500: '#4233b1',
    950: '#000000',
  },
}

SCSS

$custom: #4233b1;
$custom-light: #846cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#4233b1",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 177
  },
  "hsl": {
    "h": 247.143,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42476,
    "c": 0.18944,
    "h": 280
  },
  "luminance": 0.067
}

Semantic roles & 50–950 ramp

primary

#4233B1

secondary

#BCC57B

accent

#DF49CD

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4233B1

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

Preview Lab → · Contrast checker → · Palette generator →