#4258BF#4258BF

#4258BF is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.1% C 0.163 H 270.4°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#4258BF
RGB	rgb(66, 88, 191)
HSL	hsl(229, 49%, 50%)
HSV	hsv(229, 65%, 75%)
CMYK	cmyk(65.4%, 53.9%, 0%, 25.1%)
CIE-LAB	lab(41.05, 25.10, -56.73)
CIE-LCH	lch(41.05, 62.04, 293.87°)
OKLab	oklab(50.13% 0.0011 -0.163)
OKLCH	oklch(50.13% 0.163 270.4)
XYZ	xyz(15.1373, 11.8979, 50.7789)
Luminance	0.1190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258BF #BFA942

analogous

#4296BF #4258BF #6A42BF

triadic

#4258BF #BF4258 #58BF42

tetradic

#4258BF #BF4296 #BFA942 #42BF6A

square

#4258BF #BF4296 #BFA942 #42BF6A

split-complementary

#4258BF #BF6A42 #96BF42

monochromatic

#222E65 #324392 #4258BF #7080CE #9DA9DE

Accessibility & contrast

On white

6.21

#4258BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#4258BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258BF

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258BF	#FFFFFF	#000000	##FFFFFF
##4258BF	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E67C3

Deuteranopia (green-blind)

#005BBD

Tritanopia (blue-blind)

#007083

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4258bf;
/* rgb */ color: rgb(66, 88, 191);
/* oklch */ color: oklch(50.1% 0.163 270.4);

Tailwind

colors: {
  custom: {
    50: '#8486d3',
    500: '#4258bf',
    950: '#000000',
  },
}

SCSS

$custom: #4258bf;
$custom-light: #8486d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4258bf",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 191
  },
  "hsl": {
    "h": 229.44,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.50134,
    "c": 0.16298,
    "h": 270.4
  },
  "luminance": 0.11899
}

Semantic roles & 50–950 ramp

primary

#4258BF

secondary

#CAC093

accent

#C14FD9

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #4258BF

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

Preview Lab → · Contrast checker → · Palette generator →