#4253BB#4253BB

#4253BB is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.9% C 0.164 H 271.9°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#4253BB
RGB	rgb(66, 83, 187)
HSL	hsl(232, 48%, 50%)
HSV	hsv(232, 65%, 73%)
CMYK	cmyk(64.7%, 55.6%, 0%, 26.7%)
CIE-LAB	lab(39.46, 26.90, -56.97)
CIE-LCH	lch(39.46, 63.00, 295.28°)
OKLab	oklab(48.85% 0.0055 -0.1637)
OKLCH	oklch(48.85% 0.164 271.9)
XYZ	xyz(14.3067, 10.9314, 48.3601)
Luminance	0.1093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4253BB #BBAA42

analogous

#4290BB #4253BB #6D42BB

triadic

#4253BB #BB4253 #53BB42

tetradic

#4253BB #BB4290 #BBAA42 #42BB6D

square

#4253BB #BB4290 #BBAA42 #42BB6D

split-complementary

#4253BB #BB6D42 #90BB42

monochromatic

#222B61 #323F8E #4253BB #6E7BCC #9CA5DC

Accessibility & contrast

On white

6.59

#4253BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#4253BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4253BB

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4253BB	#FFFFFF	#000000	##FFFFFF
##4253BB	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#0058B9

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4253bb;
/* rgb */ color: rgb(66, 83, 187);
/* oklch */ color: oklch(48.9% 0.164 271.9);

Tailwind

colors: {
  custom: {
    50: '#8383d0',
    500: '#4253bb',
    950: '#000000',
  },
}

SCSS

$custom: #4253bb;
$custom-light: #8383d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4253bb",
  "rgb": {
    "r": 66,
    "g": 83,
    "b": 187
  },
  "hsl": {
    "h": 231.57,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.48851,
    "c": 0.16382,
    "h": 271.9
  },
  "luminance": 0.10933
}

Semantic roles & 50–950 ramp

primary

#4253BB

secondary

#C8C091

accent

#C450D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4253BB

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

Preview Lab → · Contrast checker → · Palette generator →