#4233B3#4233B3

#4233B3 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.7% C 0.192 H 279.8°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#4233B3
RGB	rgb(66, 51, 179)
HSL	hsl(247, 56%, 45%)
HSV	hsv(247, 72%, 70%)
CMYK	cmyk(63.1%, 71.5%, 0%, 29.8%)
CIE-LAB	lab(31.30, 43.88, -65.57)
CIE-LCH	lch(31.30, 78.90, 303.79°)
OKLab	oklab(42.67% 0.0326 -0.1891)
OKLCH	oklch(42.67% 0.192 279.8)
XYZ	xyz(11.5647, 6.7797, 43.3383)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 4.11

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4233B3 #A4B333

analogous

#3364B3 #4233B3 #8233B3

triadic

#4233B3 #B34233 #33B342

tetradic

#4233B3 #B33364 #A4B333 #33B382

square

#4233B3 #B33364 #A4B333 #33B382

split-complementary

#4233B3 #B38233 #64B333

monochromatic

#1F1854 #302583 #4233B3 #6355CE #8F84DC

Accessibility & contrast

On white

8.91

#4233B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#4233B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4233B3

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4233B3	#FFFFFF	#000000	##FFFFFF
##4233B3	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB7

Deuteranopia (green-blind)

#0045B1

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #4233b3;
/* rgb */ color: rgb(66, 51, 179);
/* oklch */ color: oklch(42.7% 0.192 279.8);

Tailwind

colors: {
  custom: {
    50: '#846dcb',
    500: '#4233b3',
    950: '#000000',
  },
}

SCSS

$custom: #4233b3;
$custom-light: #846dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#4233b3",
  "rgb": {
    "r": 66,
    "g": 51,
    "b": 179
  },
  "hsl": {
    "h": 247.031,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42667,
    "c": 0.19192,
    "h": 279.8
  },
  "luminance": 0.06781
}

Semantic roles & 50–950 ramp

primary

#4233B3

secondary

#BDC67C

accent

#DF49CD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4233B3

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

Preview Lab → · Contrast checker → · Palette generator →