#4255B8#4255B8

#4255B8 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.0% C 0.157 H 271.3°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#4255B8
RGB	rgb(66, 85, 184)
HSL	hsl(230, 47%, 49%)
HSV	hsv(230, 64%, 72%)
CMYK	cmyk(64.1%, 53.8%, 0%, 27.8%)
CIE-LAB	lab(39.77, 24.56, -54.71)
CIE-LCH	lch(39.77, 59.97, 294.18°)
OKLab	oklab(49.02% 0.0035 -0.1571)
OKLCH	oklch(49.02% 0.157 271.3)
XYZ	xyz(14.1441, 11.1147, 46.7381)
Luminance	0.1112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255B8 #B8A542

analogous

#4290B8 #4255B8 #6A42B8

triadic

#4255B8 #B84255 #55B842

tetradic

#4255B8 #B84290 #B8A542 #42B86A

square

#4255B8 #B84290 #B8A542 #42B86A

split-complementary

#4255B8 #B86A42 #90B842

monochromatic

#222B5E #32408B #4255B8 #6D7CCB #9AA4DB

Accessibility & contrast

On white

6.52

#4255B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#4255B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255B8

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255B8	#FFFFFF	#000000	##FFFFFF
##4255B8	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1163BB

Deuteranopia (green-blind)

#0059B6

Tritanopia (blue-blind)

#006C7E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4255b8;
/* rgb */ color: rgb(66, 85, 184);
/* oklch */ color: oklch(49.0% 0.157 271.3);

Tailwind

colors: {
  custom: {
    50: '#8384ce',
    500: '#4255b8',
    950: '#000000',
  },
}

SCSS

$custom: #4255b8;
$custom-light: #8384ce;
$custom-dark: #000000;

JSON

{
  "hex": "#4255b8",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 184
  },
  "hsl": {
    "h": 230.339,
    "s": 47.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.49015,
    "c": 0.15711,
    "h": 271.3
  },
  "luminance": 0.11116
}

Semantic roles & 50–950 ramp

primary

#4255B8

secondary

#C7BE8F

accent

#C151D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4255B8

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

Preview Lab → · Contrast checker → · Palette generator →