#4259D3#4259D3

#4259D3 is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.9% C 0.189 H 270.3°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#4259D3
RGB	rgb(66, 89, 211)
HSL	hsl(230, 62%, 54%)
HSV	hsv(230, 69%, 83%)
CMYK	cmyk(68.7%, 57.8%, 0%, 17.3%)
CIE-LAB	lab(42.77, 31.52, -65.51)
CIE-LCH	lch(42.77, 72.70, 295.70°)
OKLab	oklab(51.88% 0.0011 -0.1888)
OKLCH	oklch(51.88% 0.189 270.3)
XYZ	xyz(17.5730, 13.0044, 63.1994)
Luminance	0.1301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4259D3 #D3BC42

analogous

#42A2D3 #4259D3 #7442D3

triadic

#4259D3 #D34259 #59D342

tetradic

#4259D3 #D342A2 #D3BC42 #42D374

square

#4259D3 #D342A2 #D3BC42 #42D374

split-complementary

#4259D3 #D37442 #A2D342

monochromatic

#1D2C7D #293EAF #4259D3 #7485DF #A5B0EA

Accessibility & contrast

On white

5.83

#4259D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#4259D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4259D3

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4259D3	#FFFFFF	#000000	##FFFFFF
##4259D3	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD7

Deuteranopia (green-blind)

#005FD1

Tritanopia (blue-blind)

#00778D

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4259d3;
/* rgb */ color: rgb(66, 89, 211);
/* oklch */ color: oklch(51.9% 0.189 270.3);

Tailwind

colors: {
  custom: {
    50: '#8887e1',
    500: '#4259d3',
    950: '#000000',
  },
}

SCSS

$custom: #4259d3;
$custom-light: #8887e1;
$custom-dark: #000000;

JSON

{
  "hex": "#4259d3",
  "rgb": {
    "r": 66,
    "g": 89,
    "b": 211
  },
  "hsl": {
    "h": 230.483,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.5188,
    "c": 0.18877,
    "h": 270.3
  },
  "luminance": 0.13006
}

Semantic roles & 50–950 ramp

primary

#4259D3

secondary

#D7CD9A

accent

#CB42E5

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4259D3

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

Preview Lab → · Contrast checker → · Palette generator →