#4258D9#4258D9

#4258D9 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 52.2% C 0.198 H 270.5°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#4258D9
RGB	rgb(66, 88, 217)
HSL	hsl(231, 67%, 55%)
HSV	hsv(231, 70%, 85%)
CMYK	cmyk(69.6%, 59.4%, 0%, 14.9%)
CIE-LAB	lab(42.98, 34.26, -68.59)
CIE-LCH	lch(42.98, 76.67, 296.54°)
OKLab	oklab(52.18% 0.0019 -0.1979)
OKLCH	oklch(52.18% 0.198 270.5)
XYZ	xyz(18.2566, 13.1456, 67.2074)
Luminance	0.1315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258D9 #D9C342

analogous

#42A4D9 #4258D9 #7742D9

triadic

#4258D9 #D94258 #58D942

tetradic

#4258D9 #D942A4 #D9C342 #42D977

square

#4258D9 #D942A4 #D9C342 #42D977

split-complementary

#4258D9 #D97742 #A4D942

monochromatic

#1B2A86 #253BB9 #4258D9 #7585E3 #A8B2ED

Accessibility & contrast

On white

5.79

#4258D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#4258D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258D9

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258D9	#FFFFFF	#000000	##FFFFFF
##4258D9	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DDD

Deuteranopia (green-blind)

#005FD6

Tritanopia (blue-blind)

#007890

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #4258d9;
/* rgb */ color: rgb(66, 88, 217);
/* oklch */ color: oklch(52.2% 0.198 270.5);

Tailwind

colors: {
  custom: {
    50: '#8987e6',
    500: '#4258d9',
    950: '#000000',
  },
}

SCSS

$custom: #4258d9;
$custom-light: #8987e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4258d9",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 217
  },
  "hsl": {
    "h": 231.258,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.52182,
    "c": 0.19787,
    "h": 270.5
  },
  "luminance": 0.13147
}

Semantic roles & 50–950 ramp

primary

#4258D9

secondary

#DBD29C

accent

#D13EE9

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4258D9

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

Preview Lab → · Contrast checker → · Palette generator →