#4255B7#4255B7

#4255B7 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.9% C 0.156 H 271.3°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#4255B7
RGB	rgb(66, 85, 183)
HSL	hsl(230, 47%, 49%)
HSV	hsv(230, 64%, 72%)
CMYK	cmyk(63.9%, 53.6%, 0%, 28.2%)
CIE-LAB	lab(39.70, 24.21, -54.24)
CIE-LCH	lch(39.70, 59.39, 294.05°)
OKLab	oklab(48.94% 0.0034 -0.1557)
OKLCH	oklch(48.94% 0.156 271.3)
XYZ	xyz(14.0396, 11.0729, 46.1880)
Luminance	0.1107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255B7 #B7A442

analogous

#4290B7 #4255B7 #6A42B7

triadic

#4255B7 #B74255 #55B742

tetradic

#4255B7 #B74290 #B7A442 #42B76A

square

#4255B7 #B74290 #B7A442 #42B76A

split-complementary

#4255B7 #B76A42 #90B742

monochromatic

#222B5D #32408A #4255B7 #6C7BCA #99A4DA

Accessibility & contrast

On white

6.53

#4255B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#4255B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255B7

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255B7	#FFFFFF	#000000	##FFFFFF
##4255B7	1.00	6.53	3.21	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1463BA

Deuteranopia (green-blind)

#0059B5

Tritanopia (blue-blind)

#006C7E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4255b7;
/* rgb */ color: rgb(66, 85, 183);
/* oklch */ color: oklch(48.9% 0.156 271.3);

Tailwind

colors: {
  custom: {
    50: '#8284cd',
    500: '#4255b7',
    950: '#000000',
  },
}

SCSS

$custom: #4255b7;
$custom-light: #8284cd;
$custom-dark: #000000;

JSON

{
  "hex": "#4255b7",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 183
  },
  "hsl": {
    "h": 230.256,
    "s": 46.988,
    "l": 48.824
  },
  "oklch": {
    "l": 0.4894,
    "c": 0.15571,
    "h": 271.3
  },
  "luminance": 0.11074
}

Semantic roles & 50–950 ramp

primary

#4255B7

secondary

#C6BD8F

accent

#C151D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #4255B7

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

Preview Lab → · Contrast checker → · Palette generator →