#4258D3#4258D3

#4258D3 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.7% C 0.190 H 270.6°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#4258D3
RGB	rgb(66, 88, 211)
HSL	hsl(231, 62%, 54%)
HSV	hsv(231, 69%, 83%)
CMYK	cmyk(68.7%, 58.3%, 0%, 17.3%)
CIE-LAB	lab(42.52, 32.16, -65.91)
CIE-LCH	lch(42.52, 73.34, 296.01°)
OKLab	oklab(51.69% 0.0019 -0.19)
OKLCH	oklch(51.69% 0.19 270.6)
XYZ	xyz(17.4904, 12.8391, 63.1718)
Luminance	0.1284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258D3 #D3BD42

analogous

#42A0D3 #4258D3 #7542D3

triadic

#4258D3 #D34258 #58D342

tetradic

#4258D3 #D342A0 #D3BD42 #42D375

square

#4258D3 #D342A0 #D3BD42 #42D375

split-complementary

#4258D3 #D37542 #A0D342

monochromatic

#1D2C7D #293DAF #4258D3 #7484DF #A5B0EA

Accessibility & contrast

On white

5.89

#4258D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#4258D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258D3

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258D3	#FFFFFF	#000000	##FFFFFF
##4258D3	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD7

Deuteranopia (green-blind)

#005ED1

Tritanopia (blue-blind)

#00768D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4258d3;
/* rgb */ color: rgb(66, 88, 211);
/* oklch */ color: oklch(51.7% 0.190 270.6);

Tailwind

colors: {
  custom: {
    50: '#8887e1',
    500: '#4258d3',
    950: '#000000',
  },
}

SCSS

$custom: #4258d3;
$custom-light: #8887e1;
$custom-dark: #000000;

JSON

{
  "hex": "#4258d3",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 211
  },
  "hsl": {
    "h": 230.897,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.51694,
    "c": 0.18999,
    "h": 270.6
  },
  "luminance": 0.12841
}

Semantic roles & 50–950 ramp

primary

#4258D3

secondary

#D7CE9A

accent

#CD42E5

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4258D3

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

Preview Lab → · Contrast checker → · Palette generator →