#4245D8#4245D8

#4245D8 is a mid, highly saturated blue. Relative luminance 0.104; OKLCH L 48.9% C 0.218 H 273.9°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#4245D8
RGB	rgb(66, 69, 216)
HSL	hsl(239, 66%, 55%)
HSV	hsv(239, 69%, 85%)
CMYK	cmyk(69.4%, 68.1%, 0%, 15.3%)
CIE-LAB	lab(38.50, 45.50, -75.36)
CIE-LCH	lch(38.50, 88.03, 301.12°)
OKLab	oklab(48.87% 0.0149 -0.2178)
OKLCH	oklch(48.87% 0.218 273.9)
XYZ	xyz(16.7654, 10.3708, 66.0706)
Luminance	0.1037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.33

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4245D8 #D8D542

analogous

#4290D8 #4245D8 #8A42D8

triadic

#4245D8 #D84245 #45D842

tetradic

#4245D8 #D84290 #D8D542 #42D88A

square

#4245D8 #D84290 #D8D542 #42D88A

split-complementary

#4245D8 #D88A42 #90D842

monochromatic

#1B1D84 #2629B7 #4245D8 #7577E2 #A7A9ED

Accessibility & contrast

On white

6.83

#4245D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#4245D8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4245D8

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4245D8	#FFFFFF	#000000	##FFFFFF
##4245D8	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062DC

Deuteranopia (green-blind)

#0054D5

Tritanopia (blue-blind)

#006D89

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #4245d8;
/* rgb */ color: rgb(66, 69, 216);
/* oklch */ color: oklch(48.9% 0.218 273.9);

Tailwind

colors: {
  custom: {
    50: '#8a79e5',
    500: '#4245d8',
    950: '#000000',
  },
}

SCSS

$custom: #4245d8;
$custom-light: #8a79e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4245d8",
  "rgb": {
    "r": 66,
    "g": 69,
    "b": 216
  },
  "hsl": {
    "h": 238.8,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.48873,
    "c": 0.2183,
    "h": 273.9
  },
  "luminance": 0.10372
}

Semantic roles & 50–950 ramp

primary

#4245D8

secondary

#DAD99C

accent

#E53FE9

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #4245D8

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

Preview Lab → · Contrast checker → · Palette generator →