#4233B5#4233B5

#4233B5 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.9% C 0.194 H 279.5°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#4233B5
RGB	rgb(66, 51, 181)
HSL	hsl(247, 56%, 45%)
HSV	hsv(247, 72%, 71%)
CMYK	cmyk(63.5%, 71.8%, 0%, 29%)
CIE-LAB	lab(31.49, 44.52, -66.45)
CIE-LCH	lch(31.49, 79.98, 303.82°)
OKLab	oklab(42.86% 0.0322 -0.1917)
OKLCH	oklch(42.86% 0.194 279.5)
XYZ	xyz(11.7684, 6.8612, 44.4113)
Luminance	0.0686 (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

#4233B5 #A6B533

analogous

#3365B5 #4233B5 #8333B5

triadic

#4233B5 #B54233 #33B542

tetradic

#4233B5 #B53365 #A6B533 #33B583

square

#4233B5 #B53365 #A6B533 #33B583

split-complementary

#4233B5 #B58333 #65B533

monochromatic

#1F1856 #312685 #4233B5 #6456CF #9086DD

Accessibility & contrast

On white

8.85

#4233B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#4233B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4233B5

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4233B5	#FFFFFF	#000000	##FFFFFF
##4233B5	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB9

Deuteranopia (green-blind)

#0045B3

Tritanopia (blue-blind)

#005770

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #4233b5;
/* rgb */ color: rgb(66, 51, 181);
/* oklch */ color: oklch(42.9% 0.194 279.5);

Tailwind

colors: {
  custom: {
    50: '#856dcc',
    500: '#4233b5',
    950: '#000000',
  },
}

SCSS

$custom: #4233b5;
$custom-light: #856dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#4233b5",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 181
  },
  "hsl": {
    "h": 246.923,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42859,
    "c": 0.19439,
    "h": 279.5
  },
  "luminance": 0.06862
}

Semantic roles & 50–950 ramp

primary

#4233B5

secondary

#BEC67D

accent

#DF48CE

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #4233B5

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

Preview Lab → · Contrast checker → · Palette generator →