#4247B5#4247B5

#4247B5 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 46.1% C 0.171 H 275.4°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#4247B5
RGB	rgb(66, 71, 181)
HSL	hsl(237, 47%, 48%)
HSV	hsv(237, 64%, 71%)
CMYK	cmyk(63.5%, 60.8%, 0%, 29%)
CIE-LAB	lab(35.98, 32.47, -59.09)
CIE-LCH	lch(35.98, 67.42, 298.79°)
OKLab	oklab(46.12% 0.0162 -0.1701)
OKLCH	oklch(46.12% 0.171 275.4)
XYZ	xyz(12.8378, 8.9999, 44.7677)
Luminance	0.0900 (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

#4247B5 #B5B042

analogous

#4280B5 #4247B5 #7642B5

triadic

#4247B5 #B54247 #47B542

tetradic

#4247B5 #B54280 #B5B042 #42B576

square

#4247B5 #B54280 #B5B042 #42B576

split-complementary

#4247B5 #B57642 #80B542

monochromatic

#21245B #323588 #4247B5 #6B6FC9 #989BD9

Accessibility & contrast

On white

7.50

#4247B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#4247B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4247B5

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4247B5	#FFFFFF	#000000	##FFFFFF
##4247B5	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB9

Deuteranopia (green-blind)

#0050B3

Tritanopia (blue-blind)

#006277

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4247b5;
/* rgb */ color: rgb(66, 71, 181);
/* oklch */ color: oklch(46.1% 0.171 275.4);

Tailwind

colors: {
  custom: {
    50: '#837acc',
    500: '#4247b5',
    950: '#000000',
  },
}

SCSS

$custom: #4247b5;
$custom-light: #837acc;
$custom-dark: #000000;

JSON

{
  "hex": "#4247b5",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 181
  },
  "hsl": {
    "h": 237.391,
    "s": 46.559,
    "l": 48.431
  },
  "oklch": {
    "l": 0.46121,
    "c": 0.17087,
    "h": 275.4
  },
  "luminance": 0.09001
}

Semantic roles & 50–950 ramp

primary

#4247B5

secondary

#C5C38E

accent

#D052D6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0913

muted

#7D7B82

Preview Lab

Preview with #4247B5

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

Preview Lab → · Contrast checker → · Palette generator →