#4255D1#4255D1

#4255D1 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 51.0% C 0.191 H 271.3°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#4255D1
RGB	rgb(66, 85, 209)
HSL	hsl(232, 61%, 54%)
HSV	hsv(232, 68%, 82%)
CMYK	cmyk(68.4%, 59.3%, 0%, 18%)
CIE-LAB	lab(41.62, 33.34, -66.23)
CIE-LCH	lch(41.62, 74.15, 296.72°)
OKLab	oklab(50.98% 0.0042 -0.1909)
OKLCH	oklch(50.98% 0.191 271.3)
XYZ	xyz(17.0000, 12.2571, 61.7792)
Luminance	0.1226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255D1 #D1BE42

analogous

#429DD1 #4255D1 #7742D1

triadic

#4255D1 #D14255 #55D142

tetradic

#4255D1 #D1429D #D1BE42 #42D177

square

#4255D1 #D1429D #D1BE42 #42D177

split-complementary

#4255D1 #D17742 #9DD142

monochromatic

#1E2A7B #2A3BAC #4255D1 #7381DD #A4AEE9

Accessibility & contrast

On white

6.08

#4255D1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#4255D1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255D1

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255D1	#FFFFFF	#000000	##FFFFFF
##4255D1	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D5

Deuteranopia (green-blind)

#005CCF

Tritanopia (blue-blind)

#00748B

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4255d1;
/* rgb */ color: rgb(66, 85, 209);
/* oklch */ color: oklch(51.0% 0.191 271.3);

Tailwind

colors: {
  custom: {
    50: '#8884e0',
    500: '#4255d1',
    950: '#000000',
  },
}

SCSS

$custom: #4255d1;
$custom-light: #8884e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4255d1",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 209
  },
  "hsl": {
    "h": 232.028,
    "s": 60.851,
    "l": 53.922
  },
  "oklch": {
    "l": 0.50978,
    "c": 0.19098,
    "h": 271.3
  },
  "luminance": 0.12259
}

Semantic roles & 50–950 ramp

primary

#4255D1

secondary

#D6CE99

accent

#CF44E4

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4255D1

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

Preview Lab → · Contrast checker → · Palette generator →