#4258CC#4258CC

#4258CC is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.1% C 0.181 H 270.5°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#4258CC
RGB	rgb(66, 88, 204)
HSL	hsl(230, 58%, 53%)
HSV	hsv(230, 68%, 80%)
CMYK	cmyk(67.6%, 56.9%, 0%, 20%)
CIE-LAB	lab(41.99, 29.69, -62.74)
CIE-LCH	lch(41.99, 69.41, 295.33°)
OKLab	oklab(51.14% 0.0017 -0.1807)
OKLCH	oklch(51.14% 0.181 270.5)
XYZ	xyz(16.6319, 12.4958, 58.6505)
Luminance	0.1250 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258CC #CCB642

analogous

#429DCC #4258CC #7142CC

triadic

#4258CC #CC4258 #58CC42

tetradic

#4258CC #CC429D #CCB642 #42CC71

square

#4258CC #CC429D #CCB642 #42CC71

split-complementary

#4258CC #CC7142 #9DCC42

monochromatic

#1F2D74 #2C40A4 #4258CC #7283D9 #A2ADE6

Accessibility & contrast

On white

6.00

#4258CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#4258CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258CC

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258CC	#FFFFFF	#000000	##FFFFFF
##4258CC	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD0

Deuteranopia (green-blind)

#005DCA

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4258cc;
/* rgb */ color: rgb(66, 88, 204);
/* oklch */ color: oklch(51.1% 0.181 270.5);

Tailwind

colors: {
  custom: {
    50: '#8686dc',
    500: '#4258cc',
    950: '#000000',
  },
}

SCSS

$custom: #4258cc;
$custom-light: #8686dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4258cc",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 204
  },
  "hsl": {
    "h": 230.435,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.51136,
    "c": 0.18067,
    "h": 270.5
  },
  "luminance": 0.12497
}

Semantic roles & 50–950 ramp

primary

#4258CC

secondary

#D3C997

accent

#C847E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4258CC

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

Preview Lab → · Contrast checker → · Palette generator →