#4255D5#4255D5

#4255D5 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.3% C 0.196 H 271.2°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#4255D5
RGB	rgb(66, 85, 213)
HSL	hsl(232, 64%, 55%)
HSV	hsv(232, 69%, 84%)
CMYK	cmyk(69%, 60.1%, 0%, 16.5%)
CIE-LAB	lab(41.93, 34.74, -68.01)
CIE-LCH	lch(41.93, 76.37, 297.06°)
OKLab	oklab(51.31% 0.0042 -0.1962)
OKLCH	oklch(51.31% 0.196 271.2)
XYZ	xyz(17.5014, 12.4576, 64.4201)
Luminance	0.1246 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255D5 #D5C242

analogous

#429ED5 #4255D5 #7942D5

triadic

#4255D5 #D54255 #55D542

tetradic

#4255D5 #D5429E #D5C242 #42D579

square

#4255D5 #D5429E #D5C242 #42D579

split-complementary

#4255D5 #D57942 #9ED542

monochromatic

#1C2980 #283AB2 #4255D5 #7482E0 #A6AFEB

Accessibility & contrast

On white

6.01

#4255D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#4255D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255D5

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255D5	#FFFFFF	#000000	##FFFFFF
##4255D5	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD9

Deuteranopia (green-blind)

#005CD3

Tritanopia (blue-blind)

#00758D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4255d5;
/* rgb */ color: rgb(66, 85, 213);
/* oklch */ color: oklch(51.3% 0.196 271.2);

Tailwind

colors: {
  custom: {
    50: '#8884e3',
    500: '#4255d5',
    950: '#000000',
  },
}

SCSS

$custom: #4255d5;
$custom-light: #8884e3;
$custom-dark: #000000;

JSON

{
  "hex": "#4255d5",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 213
  },
  "hsl": {
    "h": 232.245,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.51308,
    "c": 0.19622,
    "h": 271.2
  },
  "luminance": 0.12459
}

Semantic roles & 50–950 ramp

primary

#4255D5

secondary

#D8D09A

accent

#D141E7

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4255D5

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

Preview Lab → · Contrast checker → · Palette generator →