#4259BD#4259BD

#4259BD is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.2% C 0.159 H 270.0°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#4259BD
RGB	rgb(66, 89, 189)
HSL	hsl(229, 48%, 50%)
HSV	hsv(229, 65%, 74%)
CMYK	cmyk(65.1%, 52.9%, 0%, 25.9%)
CIE-LAB	lab(41.18, 23.75, -55.36)
CIE-LCH	lch(41.18, 60.24, 293.22°)
OKLab	oklab(50.18% 0.0001 -0.1589)
OKLCH	oklch(50.18% 0.159 270)
XYZ	xyz(15.0013, 11.9758, 49.6552)
Luminance	0.1198 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259BD #BDA642

analogous

#4297BD #4259BD #6842BD

triadic

#4259BD #BD4259 #59BD42

tetradic

#4259BD #BD4297 #BDA642 #42BD68

square

#4259BD #BD4297 #BDA642 #42BD68

split-complementary

#4259BD #BD6842 #97BD42

monochromatic

#222E62 #324490 #4259BD #6F81CD #9DA9DD

Accessibility & contrast

On white

6.18

#4259BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#4259BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259BD

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259BD	#FFFFFF	#000000	##FFFFFF
##4259BD	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1867C1

Deuteranopia (green-blind)

#005CBB

Tritanopia (blue-blind)

#007182

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4259bd;
/* rgb */ color: rgb(66, 89, 189);
/* oklch */ color: oklch(50.2% 0.159 270.0);

Tailwind

colors: {
  custom: {
    50: '#8387d2',
    500: '#4259bd',
    950: '#000000',
  },
}

SCSS

$custom: #4259bd;
$custom-light: #8387d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4259bd",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 189
  },
  "hsl": {
    "h": 228.78,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.50183,
    "c": 0.15894,
    "h": 270
  },
  "luminance": 0.11977
}

Semantic roles & 50–950 ramp

primary

#4259BD

secondary

#C9BF92

accent

#BE50D8

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #4259BD

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

Preview Lab → · Contrast checker → · Palette generator →