#4255B9#4255B9

#4255B9 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.1% C 0.159 H 271.3°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#4255B9
RGB	rgb(66, 85, 185)
HSL	hsl(230, 47%, 49%)
HSV	hsv(230, 64%, 73%)
CMYK	cmyk(64.3%, 54.1%, 0%, 27.5%)
CIE-LAB	lab(39.84, 24.91, -55.18)
CIE-LCH	lch(39.84, 60.54, 294.30°)
OKLab	oklab(49.09% 0.0035 -0.1585)
OKLCH	oklch(49.09% 0.159 271.3)
XYZ	xyz(14.2493, 11.1568, 47.2921)
Luminance	0.1116 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255B9 #B9A642

analogous

#4291B9 #4255B9 #6B42B9

triadic

#4255B9 #B94255 #55B942

tetradic

#4255B9 #B94291 #B9A642 #42B96B

square

#4255B9 #B94291 #B9A642 #42B96B

split-complementary

#4255B9 #B96B42 #91B942

monochromatic

#222C5F #32408C #4255B9 #6D7CCB #9AA5DB

Accessibility & contrast

On white

6.50

#4255B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#4255B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255B9

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255B9	#FFFFFF	#000000	##FFFFFF
##4255B9	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E63BC

Deuteranopia (green-blind)

#0059B7

Tritanopia (blue-blind)

#006D7F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4255b9;
/* rgb */ color: rgb(66, 85, 185);
/* oklch */ color: oklch(49.1% 0.159 271.3);

Tailwind

colors: {
  custom: {
    50: '#8384cf',
    500: '#4255b9',
    950: '#000000',
  },
}

SCSS

$custom: #4255b9;
$custom-light: #8384cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4255b9",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 185
  },
  "hsl": {
    "h": 230.42,
    "s": 47.41,
    "l": 49.216
  },
  "oklch": {
    "l": 0.4909,
    "c": 0.1585,
    "h": 271.3
  },
  "luminance": 0.11158
}

Semantic roles & 50–950 ramp

primary

#4255B9

secondary

#C7BE90

accent

#C251D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4255B9

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

Preview Lab → · Contrast checker → · Palette generator →