#4258A3#4258A3

#4258A3 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.1% C 0.123 H 269.1°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#4258A3
RGB	rgb(66, 88, 163)
HSL	hsl(226, 42%, 45%)
HSV	hsv(226, 60%, 64%)
CMYK	cmyk(59.5%, 46%, 0%, 36.1%)
CIE-LAB	lab(39.21, 15.24, -43.20)
CIE-LCH	lch(39.21, 45.81, 289.43°)
OKLab	oklab(48.15% -0.0019 -0.1232)
OKLCH	oklch(48.15% 0.123 269.1)
XYZ	xyz(12.3451, 10.7811, 36.0736)
Luminance	0.1078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258A3 #A38D42

analogous

#4288A3 #4258A3 #5D42A3

triadic

#4258A3 #A34258 #58A342

tetradic

#4258A3 #A34288 #A38D42 #42A35D

square

#4258A3 #A34288 #A38D42 #42A35D

split-complementary

#4258A3 #A35D42 #88A342

monochromatic

#1F294C #304077 #4258A3 #6378C0 #8E9DD1

Accessibility & contrast

On white

6.65

#4258A3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#4258A3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258A3

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258A3	#FFFFFF	#000000	##FFFFFF
##4258A3	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3561A6

Deuteranopia (green-blind)

#2758A1

Tritanopia (blue-blind)

#006975

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4258a3;
/* rgb */ color: rgb(66, 88, 163);
/* oklch */ color: oklch(48.1% 0.123 269.1);

Tailwind

colors: {
  custom: {
    50: '#7f86bf',
    500: '#4258a3',
    950: '#000000',
  },
}

SCSS

$custom: #4258a3;
$custom-light: #7f86bf;
$custom-dark: #000000;

JSON

{
  "hex": "#4258a3",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 163
  },
  "hsl": {
    "h": 226.392,
    "s": 42.358,
    "l": 44.902
  },
  "oklch": {
    "l": 0.48145,
    "c": 0.12321,
    "h": 269.1
  },
  "luminance": 0.10782
}

Semantic roles & 50–950 ramp

primary

#4258A3

secondary

#BCB084

accent

#B656D2

background

#F8F8FB

surface

#EFEFF7

border

#CACAD0

text

#0B0B12

muted

#7C7C81

Preview Lab

Preview with #4258A3

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

Preview Lab → · Contrast checker → · Palette generator →