#4255A2#4255A2

#4255A2 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.4% C 0.126 H 270.6°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#4255A2
RGB	rgb(66, 85, 162)
HSL	hsl(228, 42%, 45%)
HSV	hsv(228, 59%, 64%)
CMYK	cmyk(59.3%, 47.5%, 0%, 36.5%)
CIE-LAB	lab(38.31, 16.84, -44.04)
CIE-LCH	lch(38.31, 47.15, 290.92°)
OKLab	oklab(47.44% 0.0012 -0.1257)
OKLCH	oklch(47.44% 0.126 270.6)
XYZ	xyz(12.0147, 10.2629, 35.5232)
Luminance	0.1026 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4255A2 #A28F42

analogous

#4285A2 #4255A2 #5F42A2

triadic

#4255A2 #A24255 #55A242

tetradic

#4255A2 #A24285 #A28F42 #42A25F

square

#4255A2 #A24285 #A28F42 #42A25F

split-complementary

#4255A2 #A25F42 #85A242

monochromatic

#1F274B #303E77 #4255A2 #6275BF #8E9BD1

Accessibility & contrast

On white

6.88

#4255A2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#4255A2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4255A2

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4255A2	#FFFFFF	#000000	##FFFFFF
##4255A2	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#305FA5

Deuteranopia (green-blind)

#2256A0

Tritanopia (blue-blind)

#006673

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #4255a2;
/* rgb */ color: rgb(66, 85, 162);
/* oklch */ color: oklch(47.4% 0.126 270.6);

Tailwind

colors: {
  custom: {
    50: '#7f84be',
    500: '#4255a2',
    950: '#000000',
  },
}

SCSS

$custom: #4255a2;
$custom-light: #7f84be;
$custom-dark: #000000;

JSON

{
  "hex": "#4255a2",
  "rgb": {
    "r": 66,
    "g": 85,
    "b": 162
  },
  "hsl": {
    "h": 228.125,
    "s": 42.105,
    "l": 44.706
  },
  "oklch": {
    "l": 0.47439,
    "c": 0.12571,
    "h": 270.6
  },
  "luminance": 0.10264
}

Semantic roles & 50–950 ramp

primary

#4255A2

secondary

#BCB184

accent

#B956D2

background

#F8F8FB

surface

#EFEFF7

border

#CACAD0

text

#0B0A12

muted

#7C7C81

Preview Lab

Preview with #4255A2

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

Preview Lab → · Contrast checker → · Palette generator →