#4258D1#4258D1

#4258D1 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.5% C 0.187 H 270.6°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#4258D1
RGB	rgb(66, 88, 209)
HSL	hsl(231, 61%, 54%)
HSV	hsv(231, 68%, 82%)
CMYK	cmyk(68.4%, 57.9%, 0%, 18%)
CIE-LAB	lab(42.37, 31.45, -65.01)
CIE-LCH	lch(42.37, 72.22, 295.82°)
OKLab	oklab(51.53% 0.0018 -0.1873)
OKLCH	oklch(51.53% 0.187 270.6)
XYZ	xyz(17.2412, 12.7395, 61.8596)
Luminance	0.1274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4258D1 #D1BB42

analogous

#42A0D1 #4258D1 #7442D1

triadic

#4258D1 #D14258 #58D142

tetradic

#4258D1 #D142A0 #D1BB42 #42D174

square

#4258D1 #D142A0 #D1BB42 #42D174

split-complementary

#4258D1 #D17442 #A0D142

monochromatic

#1E2C7B #2A3EAC #4258D1 #7383DD #A4AFE9

Accessibility & contrast

On white

5.92

#4258D1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#4258D1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4258D1

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4258D1	#FFFFFF	#000000	##FFFFFF
##4258D1	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD5

Deuteranopia (green-blind)

#005ECF

Tritanopia (blue-blind)

#00768C

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4258d1;
/* rgb */ color: rgb(66, 88, 209);
/* oklch */ color: oklch(51.5% 0.187 270.6);

Tailwind

colors: {
  custom: {
    50: '#8787e0',
    500: '#4258d1',
    950: '#000000',
  },
}

SCSS

$custom: #4258d1;
$custom-light: #8787e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4258d1",
  "rgb": {
    "r": 66,
    "g": 88,
    "b": 209
  },
  "hsl": {
    "h": 230.769,
    "s": 60.851,
    "l": 53.922
  },
  "oklch": {
    "l": 0.51533,
    "c": 0.18734,
    "h": 270.6
  },
  "luminance": 0.12741
}

Semantic roles & 50–950 ramp

primary

#4258D1

secondary

#D6CD99

accent

#CB44E4

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4258D1

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

Preview Lab → · Contrast checker → · Palette generator →