#4254BB#4254BB

#4254BB is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.0% C 0.163 H 271.6°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#4254BB
RGB	rgb(66, 84, 187)
HSL	hsl(231, 48%, 50%)
HSV	hsv(231, 65%, 73%)
CMYK	cmyk(64.7%, 55.1%, 0%, 26.7%)
CIE-LAB	lab(39.72, 26.26, -56.55)
CIE-LCH	lch(39.72, 62.35, 294.91°)
OKLab	oklab(49.05% 0.0046 -0.1625)
OKLCH	oklch(49.05% 0.163 271.6)
XYZ	xyz(14.3837, 11.0855, 48.3858)
Luminance	0.1109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4254BB #BBA942

analogous

#4291BB #4254BB #6C42BB

triadic

#4254BB #BB4254 #54BB42

tetradic

#4254BB #BB4291 #BBA942 #42BB6C

square

#4254BB #BB4291 #BBA942 #42BB6C

split-complementary

#4254BB #BB6C42 #91BB42

monochromatic

#222B61 #32408E #4254BB #6E7CCC #9CA5DC

Accessibility & contrast

On white

6.53

#4254BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#4254BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4254BB

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4254BB	#FFFFFF	#000000	##FFFFFF
##4254BB	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#0058B9

Tritanopia (blue-blind)

#006D7F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4254bb;
/* rgb */ color: rgb(66, 84, 187);
/* oklch */ color: oklch(49.0% 0.163 271.6);

Tailwind

colors: {
  custom: {
    50: '#8383d0',
    500: '#4254bb',
    950: '#000000',
  },
}

SCSS

$custom: #4254bb;
$custom-light: #8383d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4254bb",
  "rgb": {
    "r": 66,
    "g": 84,
    "b": 187
  },
  "hsl": {
    "h": 231.074,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.49046,
    "c": 0.16255,
    "h": 271.6
  },
  "luminance": 0.11087
}

Semantic roles & 50–950 ramp

primary

#4254BB

secondary

#C8C091

accent

#C350D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4254BB

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

Preview Lab → · Contrast checker → · Palette generator →