#4258A4#4258A4

#4258A4 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.2% C 0.125 H 269.2°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#4258A4
RGB	rgb(66, 88, 164)
HSL	hsl(227, 43%, 45%)
HSV	hsv(227, 60%, 64%)
CMYK	cmyk(59.8%, 46.3%, 0%, 35.7%)
CIE-LAB	lab(39.27, 15.59, -43.70)
CIE-LCH	lch(39.27, 46.40, 289.64°)
OKLab	oklab(48.21% -0.0018 -0.1246)
OKLCH	oklch(48.21% 0.125 269.2)
XYZ	xyz(12.4351, 10.8170, 36.5474)
Luminance	0.1082 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258A4 #A48E42

analogous

#4289A4 #4258A4 #5D42A4

triadic

#4258A4 #A44258 #58A442

tetradic

#4258A4 #A44289 #A48E42 #42A45D

square

#4258A4 #A44289 #A48E42 #42A45D

split-complementary

#4258A4 #A45D42 #89A442

monochromatic

#1F294D #304178 #4258A4 #6378C0 #8F9ED2

Accessibility & contrast

On white

6.64

#4258A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#4258A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258A4

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258A4	#FFFFFF	#000000	##FFFFFF
##4258A4	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3461A7

Deuteranopia (green-blind)

#2658A2

Tritanopia (blue-blind)

#006976

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4258a4;
/* rgb */ color: rgb(66, 88, 164);
/* oklch */ color: oklch(48.2% 0.125 269.2);

Tailwind

colors: {
  custom: {
    50: '#7f86bf',
    500: '#4258a4',
    950: '#000000',
  },
}

SCSS

$custom: #4258a4;
$custom-light: #7f86bf;
$custom-dark: #000000;

JSON

{
  "hex": "#4258a4",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 164
  },
  "hsl": {
    "h": 226.531,
    "s": 42.609,
    "l": 45.098
  },
  "oklch": {
    "l": 0.48212,
    "c": 0.12466,
    "h": 269.2
  },
  "luminance": 0.10818
}

Semantic roles & 50–950 ramp

primary

#4258A4

secondary

#BDB085

accent

#B655D2

background

#F8F8FB

surface

#EFEFF7

border

#CACAD0

text

#0B0B12

muted

#7C7C81

Preview Lab

Preview with #4258A4

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

Preview Lab → · Contrast checker → · Palette generator →