#4258D4#4258D4

#4258D4 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.8% C 0.191 H 270.6°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#4258D4
RGB	rgb(66, 88, 212)
HSL	hsl(231, 63%, 55%)
HSV	hsv(231, 69%, 83%)
CMYK	cmyk(68.9%, 58.5%, 0%, 16.9%)
CIE-LAB	lab(42.60, 32.51, -66.36)
CIE-LCH	lch(42.60, 73.90, 296.10°)
OKLab	oklab(51.78% 0.0019 -0.1913)
OKLCH	oklch(51.78% 0.191 270.6)
XYZ	xyz(17.6161, 12.8894, 63.8341)
Luminance	0.1289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258D4 #D4BE42

analogous

#42A1D4 #4258D4 #7542D4

triadic

#4258D4 #D44258 #58D442

tetradic

#4258D4 #D442A1 #D4BE42 #42D475

square

#4258D4 #D442A1 #D4BE42 #42D475

split-complementary

#4258D4 #D47542 #A1D442

monochromatic

#1D2C7F #283DB1 #4258D4 #7484DF #A6B0EB

Accessibility & contrast

On white

5.87

#4258D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#4258D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258D4

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258D4	#FFFFFF	#000000	##FFFFFF
##4258D4	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD8

Deuteranopia (green-blind)

#005ED2

Tritanopia (blue-blind)

#00778D

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4258d4;
/* rgb */ color: rgb(66, 88, 212);
/* oklch */ color: oklch(51.8% 0.191 270.6);

Tailwind

colors: {
  custom: {
    50: '#8887e2',
    500: '#4258d4',
    950: '#000000',
  },
}

SCSS

$custom: #4258d4;
$custom-light: #8887e2;
$custom-dark: #000000;

JSON

{
  "hex": "#4258d4",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 212
  },
  "hsl": {
    "h": 230.959,
    "s": 62.931,
    "l": 54.51
  },
  "oklch": {
    "l": 0.51775,
    "c": 0.19131,
    "h": 270.6
  },
  "luminance": 0.12891
}

Semantic roles & 50–950 ramp

primary

#4258D4

secondary

#D8CE9A

accent

#CD42E6

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B15

muted

#7E7C84

Preview Lab

Preview with #4258D4

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

Preview Lab → · Contrast checker → · Palette generator →