#4258B2#4258B2

#4258B2 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.2% C 0.145 H 270.0°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#4258B2
RGB	rgb(66, 88, 178)
HSL	hsl(228, 46%, 48%)
HSV	hsv(228, 63%, 70%)
CMYK	cmyk(62.9%, 50.6%, 0%, 30.2%)
CIE-LAB	lab(40.17, 20.51, -50.55)
CIE-LCH	lch(40.17, 54.55, 292.08°)
OKLab	oklab(49.18% 0 -0.1448)
OKLCH	oklch(49.18% 0.145 270)
XYZ	xyz(13.7697, 11.3509, 43.5761)
Luminance	0.1135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258B2 #B29C42

analogous

#4290B2 #4258B2 #6442B2

triadic

#4258B2 #B24258 #58B242

tetradic

#4258B2 #B24290 #B29C42 #42B264

square

#4258B2 #B24290 #B29C42 #42B264

split-complementary

#4258B2 #B26442 #90B242

monochromatic

#212C59 #314285 #4258B2 #6A7CC8 #96A3D8

Accessibility & contrast

On white

6.42

#4258B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#4258B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258B2

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258B2	#FFFFFF	#000000	##FFFFFF
##4258B2	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2664B5

Deuteranopia (green-blind)

#085AB0

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #4258b2;
/* rgb */ color: rgb(66, 88, 178);
/* oklch */ color: oklch(49.2% 0.145 270.0);

Tailwind

colors: {
  custom: {
    50: '#8186ca',
    500: '#4258b2',
    950: '#000000',
  },
}

SCSS

$custom: #4258b2;
$custom-light: #8186ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4258b2",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 178
  },
  "hsl": {
    "h": 228.214,
    "s": 45.902,
    "l": 47.843
  },
  "oklch": {
    "l": 0.4918,
    "c": 0.14479,
    "h": 270
  },
  "luminance": 0.11352
}

Semantic roles & 50–950 ramp

primary

#4258B2

secondary

#C4B98C

accent

#BC52D6

background

#F8F8FC

surface

#F0EFF8

border

#CBCAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #4258B2

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

Preview Lab → · Contrast checker → · Palette generator →