#4258B3#4258B3

#4258B3 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.146 H 270.1°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#4258B3
RGB	rgb(66, 88, 179)
HSL	hsl(228, 46%, 48%)
HSV	hsv(228, 63%, 70%)
CMYK	cmyk(63.1%, 50.8%, 0%, 29.8%)
CIE-LAB	lab(40.23, 20.86, -51.03)
CIE-LCH	lch(40.23, 55.13, 292.24°)
OKLab	oklab(49.25% 0.0001 -0.1462)
OKLCH	oklch(49.25% 0.146 270.1)
XYZ	xyz(13.8704, 11.3912, 44.1069)
Luminance	0.1139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258B3 #B39D42

analogous

#4290B3 #4258B3 #6542B3

triadic

#4258B3 #B34258 #58B342

tetradic

#4258B3 #B34290 #B39D42 #42B365

square

#4258B3 #B34290 #B39D42 #42B365

split-complementary

#4258B3 #B36542 #90B342

monochromatic

#212C5A #324286 #4258B3 #6A7CC8 #97A4D9

Accessibility & contrast

On white

6.41

#4258B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#4258B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258B3

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258B3	#FFFFFF	#000000	##FFFFFF
##4258B3	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2564B6

Deuteranopia (green-blind)

#045AB1

Tritanopia (blue-blind)

#006D7D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #4258b3;
/* rgb */ color: rgb(66, 88, 179);
/* oklch */ color: oklch(49.3% 0.146 270.1);

Tailwind

colors: {
  custom: {
    50: '#8286ca',
    500: '#4258b3',
    950: '#000000',
  },
}

SCSS

$custom: #4258b3;
$custom-light: #8286ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4258b3",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 179
  },
  "hsl": {
    "h": 228.319,
    "s": 46.122,
    "l": 48.039
  },
  "oklch": {
    "l": 0.49252,
    "c": 0.14621,
    "h": 270.1
  },
  "luminance": 0.11392
}

Semantic roles & 50–950 ramp

primary

#4258B3

secondary

#C4B98C

accent

#BC52D6

background

#F8F8FC

surface

#F0EFF8

border

#CBCAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #4258B3

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

Preview Lab → · Contrast checker → · Palette generator →