#4258A5#4258A5

#4258A5 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.3% C 0.126 H 269.3°. Best body text is #FFFFFF at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#4258A5
RGB	rgb(66, 88, 165)
HSL	hsl(227, 43%, 45%)
HSV	hsv(227, 60%, 65%)
CMYK	cmyk(60%, 46.7%, 0%, 35.3%)
CIE-LAB	lab(39.33, 15.94, -44.20)
CIE-LCH	lch(39.33, 46.98, 289.84°)
OKLab	oklab(48.28% -0.0016 -0.1261)
OKLCH	oklch(48.28% 0.126 269.3)
XYZ	xyz(12.5257, 10.8533, 37.0248)
Luminance	0.1085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258A5 #A58F42

analogous

#4289A5 #4258A5 #5E42A5

triadic

#4258A5 #A54258 #58A542

tetradic

#4258A5 #A54289 #A58F42 #42A55E

square

#4258A5 #A54289 #A58F42 #42A55E

split-complementary

#4258A5 #A55E42 #89A542

monochromatic

#1F294E #314179 #4258A5 #6378C1 #8F9ED2

Accessibility & contrast

On white

6.62

#4258A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#4258A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258A5

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258A5	#FFFFFF	#000000	##FFFFFF
##4258A5	1.00	6.62	3.17	6.62
#FFFFFF	6.62	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3461A8

Deuteranopia (green-blind)

#2558A3

Tritanopia (blue-blind)

#006976

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4258a5;
/* rgb */ color: rgb(66, 88, 165);
/* oklch */ color: oklch(48.3% 0.126 269.3);

Tailwind

colors: {
  custom: {
    50: '#7f86c0',
    500: '#4258a5',
    950: '#000000',
  },
}

SCSS

$custom: #4258a5;
$custom-light: #7f86c0;
$custom-dark: #000000;

JSON

{
  "hex": "#4258a5",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 165
  },
  "hsl": {
    "h": 226.667,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.48279,
    "c": 0.12612,
    "h": 269.3
  },
  "luminance": 0.10854
}

Semantic roles & 50–950 ramp

primary

#4258A5

secondary

#BDB185

accent

#B755D3

background

#F8F8FB

surface

#EFEFF7

border

#CACAD0

text

#0B0B12

muted

#7C7C81

Preview Lab

Preview with #4258A5

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

Preview Lab → · Contrast checker → · Palette generator →