#4258A8#4258A8

#4258A8 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.5% C 0.130 H 269.5°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#4258A8
RGB	rgb(66, 88, 168)
HSL	hsl(227, 44%, 46%)
HSV	hsv(227, 61%, 66%)
CMYK	cmyk(60.7%, 47.6%, 0%, 34.1%)
CIE-LAB	lab(39.52, 16.99, -45.68)
CIE-LCH	lch(39.52, 48.74, 290.41°)
OKLab	oklab(48.48% -0.0012 -0.1305)
OKLCH	oklch(48.48% 0.13 269.5)
XYZ	xyz(12.8020, 10.9638, 38.4798)
Luminance	0.1096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258A8 #A89242

analogous

#428BA8 #4258A8 #5F42A8

triadic

#4258A8 #A84258 #58A842

tetradic

#4258A8 #A8428B #A89242 #42A85F

square

#4258A8 #A8428B #A89242 #42A85F

split-complementary

#4258A8 #A85F42 #8BA842

monochromatic

#1F2A50 #31417C #4258A8 #6579C2 #919FD4

Accessibility & contrast

On white

6.58

#4258A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#4258A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258A8

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258A8	#FFFFFF	#000000	##FFFFFF
##4258A8	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3162AB

Deuteranopia (green-blind)

#2059A6

Tritanopia (blue-blind)

#006A78

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4258a8;
/* rgb */ color: rgb(66, 88, 168);
/* oklch */ color: oklch(48.5% 0.130 269.5);

Tailwind

colors: {
  custom: {
    50: '#8086c2',
    500: '#4258a8',
    950: '#000000',
  },
}

SCSS

$custom: #4258a8;
$custom-light: #8086c2;
$custom-dark: #000000;

JSON

{
  "hex": "#4258a8",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 168
  },
  "hsl": {
    "h": 227.059,
    "s": 43.59,
    "l": 45.882
  },
  "oklch": {
    "l": 0.48482,
    "c": 0.13048,
    "h": 269.5
  },
  "luminance": 0.10965
}

Semantic roles & 50–950 ramp

primary

#4258A8

secondary

#BFB387

accent

#B854D3

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B12

muted

#7C7C81

Preview Lab

Preview with #4258A8

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

Preview Lab → · Contrast checker → · Palette generator →