#4258D5#4258D5

#4258D5 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.9% C 0.193 H 270.6°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#4258D5
RGB	rgb(66, 88, 213)
HSL	hsl(231, 64%, 55%)
HSV	hsv(231, 69%, 84%)
CMYK	cmyk(69%, 58.7%, 0%, 16.5%)
CIE-LAB	lab(42.67, 32.86, -66.81)
CIE-LCH	lch(42.67, 74.45, 296.19°)
OKLab	oklab(51.86% 0.0019 -0.1926)
OKLCH	oklch(51.86% 0.193 270.6)
XYZ	xyz(17.7426, 12.9401, 64.5005)
Luminance	0.1294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258D5 #D5BF42

analogous

#42A2D5 #4258D5 #7542D5

triadic

#4258D5 #D54258 #58D542

tetradic

#4258D5 #D542A2 #D5BF42 #42D575

square

#4258D5 #D542A2 #D5BF42 #42D575

split-complementary

#4258D5 #D57542 #A2D542

monochromatic

#1C2B80 #283CB2 #4258D5 #7484E0 #A6B0EB

Accessibility & contrast

On white

5.85

#4258D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#4258D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258D5

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258D5	#FFFFFF	#000000	##FFFFFF
##4258D5	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD9

Deuteranopia (green-blind)

#005ED3

Tritanopia (blue-blind)

#00778E

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4258d5;
/* rgb */ color: rgb(66, 88, 213);
/* oklch */ color: oklch(51.9% 0.193 270.6);

Tailwind

colors: {
  custom: {
    50: '#8887e3',
    500: '#4258d5',
    950: '#000000',
  },
}

SCSS

$custom: #4258d5;
$custom-light: #8887e3;
$custom-dark: #000000;

JSON

{
  "hex": "#4258d5",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 213
  },
  "hsl": {
    "h": 231.02,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.51856,
    "c": 0.19263,
    "h": 270.6
  },
  "luminance": 0.12942
}

Semantic roles & 50–950 ramp

primary

#4258D5

secondary

#D8CF9A

accent

#CE41E7

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4258D5

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

Preview Lab → · Contrast checker → · Palette generator →