#4258C9#4258C9

#4258C9 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.9% C 0.177 H 270.5°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#4258C9
RGB	rgb(66, 88, 201)
HSL	hsl(230, 56%, 52%)
HSV	hsv(230, 67%, 79%)
CMYK	cmyk(67.2%, 56.2%, 0%, 21.2%)
CIE-LAB	lab(41.77, 28.64, -61.37)
CIE-LCH	lch(41.77, 67.72, 295.01°)
OKLab	oklab(50.9% 0.0016 -0.1766)
OKLCH	oklch(50.9% 0.177 270.5)
XYZ	xyz(16.2755, 12.3532, 56.7737)
Luminance	0.1235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258C9 #C9B342

analogous

#429CC9 #4258C9 #6F42C9

triadic

#4258C9 #C94258 #58C942

tetradic

#4258C9 #C9429C #C9B342 #42C96F

square

#4258C9 #C9429C #C9B342 #42C96F

split-complementary

#4258C9 #C96F42 #9CC942

monochromatic

#202D70 #2E40A0 #4258C9 #7282D7 #A1ACE4

Accessibility & contrast

On white

6.05

#4258C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#4258C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258C9

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258C9	#FFFFFF	#000000	##FFFFFF
##4258C9	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CD

Deuteranopia (green-blind)

#005DC7

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4258c9;
/* rgb */ color: rgb(66, 88, 201);
/* oklch */ color: oklch(50.9% 0.177 270.5);

Tailwind

colors: {
  custom: {
    50: '#8686da',
    500: '#4258c9',
    950: '#000000',
  },
}

SCSS

$custom: #4258c9;
$custom-light: #8686da;
$custom-dark: #000000;

JSON

{
  "hex": "#4258c9",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 201
  },
  "hsl": {
    "h": 230.222,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.50901,
    "c": 0.17663,
    "h": 270.5
  },
  "luminance": 0.12355
}

Semantic roles & 50–950 ramp

primary

#4258C9

secondary

#D1C796

accent

#C649DF

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4258C9

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

Preview Lab → · Contrast checker → · Palette generator →