#4258BB#4258BB

#4258BB is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.8% C 0.157 H 270.3°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#4258BB
RGB	rgb(66, 88, 187)
HSL	hsl(229, 48%, 50%)
HSV	hsv(229, 65%, 73%)
CMYK	cmyk(64.7%, 52.9%, 0%, 26.7%)
CIE-LAB	lab(40.77, 23.69, -54.85)
CIE-LCH	lch(40.77, 59.74, 293.36°)
OKLab	oklab(49.84% 0.0009 -0.1574)
OKLCH	oklch(49.84% 0.157 270.3)
XYZ	xyz(14.7031, 11.7242, 48.4922)
Luminance	0.1173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258BB #BBA542

analogous

#4295BB #4258BB #6942BB

triadic

#4258BB #BB4258 #58BB42

tetradic

#4258BB #BB4295 #BBA542 #42BB69

square

#4258BB #BB4295 #BBA542 #42BB69

split-complementary

#4258BB #BB6942 #95BB42

monochromatic

#222D61 #32438E #4258BB #6E7FCC #9CA7DC

Accessibility & contrast

On white

6.28

#4258BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#4258BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258BB

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258BB	#FFFFFF	#000000	##FFFFFF
##4258BB	1.00	6.28	3.35	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1866BE

Deuteranopia (green-blind)

#005BB9

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4258bb;
/* rgb */ color: rgb(66, 88, 187);
/* oklch */ color: oklch(49.8% 0.157 270.3);

Tailwind

colors: {
  custom: {
    50: '#8386d0',
    500: '#4258bb',
    950: '#000000',
  },
}

SCSS

$custom: #4258bb;
$custom-light: #8386d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4258bb",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 187
  },
  "hsl": {
    "h": 229.091,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.49835,
    "c": 0.15743,
    "h": 270.3
  },
  "luminance": 0.11726
}

Semantic roles & 50–950 ramp

primary

#4258BB

secondary

#C8BE91

accent

#BF50D7

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #4258BB

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

Preview Lab → · Contrast checker → · Palette generator →