#4258CE#4258CE

#4258CE is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.3% C 0.183 H 270.6°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#4258CE
RGB	rgb(66, 88, 206)
HSL	hsl(231, 59%, 53%)
HSV	hsv(231, 68%, 81%)
CMYK	cmyk(68%, 57.3%, 0%, 19.2%)
CIE-LAB	lab(42.14, 30.40, -63.65)
CIE-LCH	lch(42.14, 70.54, 295.53°)
OKLab	oklab(51.29% 0.0018 -0.1833)
OKLCH	oklch(51.29% 0.183 270.6)
XYZ	xyz(16.8733, 12.5923, 59.9219)
Luminance	0.1259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258CE #CEB842

analogous

#429ECE #4258CE #7242CE

triadic

#4258CE #CE4258 #58CE42

tetradic

#4258CE #CE429E #CEB842 #42CE72

square

#4258CE #CE429E #CEB842 #42CE72

split-complementary

#4258CE #CE7242 #9ECE42

monochromatic

#1F2D77 #2B3FA7 #4258CE #7383DB #A3AEE7

Accessibility & contrast

On white

5.97

#4258CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#4258CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258CE

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258CE	#FFFFFF	#000000	##FFFFFF
##4258CE	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD2

Deuteranopia (green-blind)

#005DCC

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4258ce;
/* rgb */ color: rgb(66, 88, 206);
/* oklch */ color: oklch(51.3% 0.183 270.6);

Tailwind

colors: {
  custom: {
    50: '#8786de',
    500: '#4258ce',
    950: '#000000',
  },
}

SCSS

$custom: #4258ce;
$custom-light: #8786de;
$custom-dark: #000000;

JSON

{
  "hex": "#4258ce",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 206
  },
  "hsl": {
    "h": 230.571,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.51294,
    "c": 0.18335,
    "h": 270.6
  },
  "luminance": 0.12594
}

Semantic roles & 50–950 ramp

primary

#4258CE

secondary

#D4CB98

accent

#C946E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4258CE

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

Preview Lab → · Contrast checker → · Palette generator →