#4255D9#4255D9

#4255D9 is a mid, highly saturated blue. Relative luminance 0.127; OKLCH L 51.6% C 0.201 H 271.2°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#4255D9
RGB	rgb(66, 85, 217)
HSL	hsl(232, 67%, 55%)
HSV	hsv(232, 70%, 85%)
CMYK	cmyk(69.6%, 60.8%, 0%, 14.9%)
CIE-LAB	lab(42.25, 36.13, -69.79)
CIE-LCH	lch(42.25, 78.58, 297.37°)
OKLab	oklab(51.64% 0.0041 -0.2014)
OKLCH	oklch(51.64% 0.201 271.2)
XYZ	xyz(18.0154, 12.6632, 67.1270)
Luminance	0.1267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255D9 #D9C642

analogous

#42A1D9 #4255D9 #7A42D9

triadic

#4255D9 #D94255 #55D942

tetradic

#4255D9 #D942A1 #D9C642 #42D97A

square

#4255D9 #D942A1 #D9C642 #42D97A

split-complementary

#4255D9 #D97A42 #A1D942

monochromatic

#1B2886 #2538B9 #4255D9 #7583E3 #A8B1ED

Accessibility & contrast

On white

5.94

#4255D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#4255D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255D9

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255D9	#FFFFFF	#000000	##FFFFFF
##4255D9	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BDD

Deuteranopia (green-blind)

#005DD6

Tritanopia (blue-blind)

#00768F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4255d9;
/* rgb */ color: rgb(66, 85, 217);
/* oklch */ color: oklch(51.6% 0.201 271.2);

Tailwind

colors: {
  custom: {
    50: '#8984e6',
    500: '#4255d9',
    950: '#000000',
  },
}

SCSS

$custom: #4255d9;
$custom-light: #8984e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4255d9",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 217
  },
  "hsl": {
    "h": 232.45,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.51641,
    "c": 0.20143,
    "h": 271.2
  },
  "luminance": 0.12665
}

Semantic roles & 50–950 ramp

primary

#4255D9

secondary

#DBD39C

accent

#D43EE9

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4255D9

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

Preview Lab → · Contrast checker → · Palette generator →