#4258D8#4258D8

#4258D8 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 52.1% C 0.197 H 270.5°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#4258D8
RGB	rgb(66, 88, 216)
HSL	hsl(231, 66%, 55%)
HSV	hsv(231, 69%, 85%)
CMYK	cmyk(69.4%, 59.3%, 0%, 15.3%)
CIE-LAB	lab(42.90, 33.91, -68.15)
CIE-LCH	lch(42.90, 76.12, 296.45°)
OKLab	oklab(52.1% 0.0019 -0.1965)
OKLCH	oklch(52.1% 0.197 270.5)
XYZ	xyz(18.1269, 13.0938, 66.5245)
Luminance	0.1310 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258D8 #D8C242

analogous

#42A3D8 #4258D8 #7742D8

triadic

#4258D8 #D84258 #58D842

tetradic

#4258D8 #D842A3 #D8C242 #42D877

square

#4258D8 #D842A3 #D8C242 #42D877

split-complementary

#4258D8 #D87742 #A3D842

monochromatic

#1B2B84 #263BB7 #4258D8 #7585E2 #A7B2ED

Accessibility & contrast

On white

5.80

#4258D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#4258D8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258D8

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258D8	#FFFFFF	#000000	##FFFFFF
##4258D8	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CDC

Deuteranopia (green-blind)

#005FD5

Tritanopia (blue-blind)

#00788F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4258d8;
/* rgb */ color: rgb(66, 88, 216);
/* oklch */ color: oklch(52.1% 0.197 270.5);

Tailwind

colors: {
  custom: {
    50: '#8987e5',
    500: '#4258d8',
    950: '#000000',
  },
}

SCSS

$custom: #4258d8;
$custom-light: #8987e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4258d8",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 216
  },
  "hsl": {
    "h": 231.2,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.521,
    "c": 0.19656,
    "h": 270.5
  },
  "luminance": 0.13096
}

Semantic roles & 50–950 ramp

primary

#4258D8

secondary

#DAD19C

accent

#D03FE9

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4258D8

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

Preview Lab → · Contrast checker → · Palette generator →