#4255C3#4255C3

#4255C3 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.9% C 0.172 H 271.3°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#4255C3
RGB	rgb(66, 85, 195)
HSL	hsl(231, 52%, 51%)
HSV	hsv(231, 66%, 76%)
CMYK	cmyk(66.2%, 56.4%, 0%, 23.5%)
CIE-LAB	lab(40.56, 28.43, -59.85)
CIE-LCH	lch(40.56, 66.26, 295.41°)
OKLab	oklab(49.86% 0.004 -0.1722)
OKLCH	oklch(49.86% 0.172 271.3)
XYZ	xyz(15.3423, 11.5940, 53.0485)
Luminance	0.1159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255C3 #C3B042

analogous

#4295C3 #4255C3 #6F42C3

triadic

#4255C3 #C34255 #55C342

tetradic

#4255C3 #C34295 #C3B042 #42C36F

square

#4255C3 #C34295 #C3B042 #42C36F

split-complementary

#4255C3 #C36F42 #95C342

monochromatic

#212C69 #303F98 #4255C3 #707FD2 #9FA9E0

Accessibility & contrast

On white

6.33

#4255C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#4255C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255C3

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255C3	#FFFFFF	#000000	##FFFFFF
##4255C3	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C7

Deuteranopia (green-blind)

#005AC1

Tritanopia (blue-blind)

#007084

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4255c3;
/* rgb */ color: rgb(66, 85, 195);
/* oklch */ color: oklch(49.9% 0.172 271.3);

Tailwind

colors: {
  custom: {
    50: '#8584d6',
    500: '#4255c3',
    950: '#000000',
  },
}

SCSS

$custom: #4255c3;
$custom-light: #8584d6;
$custom-dark: #000000;

JSON

{
  "hex": "#4255c3",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 195
  },
  "hsl": {
    "h": 231.163,
    "s": 51.807,
    "l": 51.176
  },
  "oklch": {
    "l": 0.49858,
    "c": 0.17225,
    "h": 271.3
  },
  "luminance": 0.11595
}

Semantic roles & 50–950 ramp

primary

#4255C3

secondary

#CDC594

accent

#C64DDB

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #4255C3

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

Preview Lab → · Contrast checker → · Palette generator →