#433F9B#433F9B

#433F9B is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.6% C 0.145 H 280.2°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#433F9B
RGB	rgb(67, 63, 155)
HSL	hsl(243, 42%, 43%)
HSV	hsv(243, 59%, 61%)
CMYK	cmyk(56.8%, 59.4%, 0%, 39.2%)
CIE-LAB	lab(32.07, 28.92, -49.89)
CIE-LCH	lch(32.07, 57.67, 300.10°)
OKLab	oklab(42.61% 0.0258 -0.1431)
OKLCH	oklch(42.61% 0.145 280.2)
XYZ	xyz(10.0068, 7.1142, 31.8499)
Luminance	0.0712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.93

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#433F9B #979B3F

analogous

#3F699B #433F9B #713F9B

triadic

#433F9B #9B433F #3F9B43

tetradic

#433F9B #9B3F69 #979B3F #3F9B71

square

#433F9B #9B3F69 #979B3F #3F9B71

split-complementary

#433F9B #9B713F #699B3F

monochromatic

#1D1C44 #302D6F #433F9B #5F5BBC #8A86CE

Accessibility & contrast

On white

8.67

#433F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#433F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #433F9B

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##433F9B	#FFFFFF	#000000	##FFFFFF
##433F9B	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004F9E

Deuteranopia (green-blind)

#004899

Tritanopia (blue-blind)

#165566

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #433f9b;
/* rgb */ color: rgb(67, 63, 155);
/* oklch */ color: oklch(42.6% 0.145 280.2);

Tailwind

colors: {
  custom: {
    50: '#7f74b9',
    500: '#433f9b',
    950: '#000000',
  },
}

SCSS

$custom: #433f9b;
$custom-light: #7f74b9;
$custom-dark: #000000;

JSON

{
  "hex": "#433f9b",
  "rgb": {
    "r": 67,
    "g": 63,
    "b": 155
  },
  "hsl": {
    "h": 242.609,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42614,
    "c": 0.14539,
    "h": 280.2
  },
  "luminance": 0.07115
}

Semantic roles & 50–950 ramp

primary

#433F9B

secondary

#B6B87D

accent

#D256CD

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #433F9B

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

Preview Lab → · Contrast checker → · Palette generator →