HSL(231, 45%, 66%)

Blue — Blue color

Adjust Color

Color Information

Color Name

Blue

Color Family

Blue

Warm / Cool

🔵 Cool

Temperature

9000K

CSS Class

bg-[hsl(231,45%,66%)]

Color Conversions

Format Value CSS Usage
HSL hsl(231, 45%, 66%) color: hsl(231, 45%, 66%)
HEX #818DCF color: #818DCF
RGB rgb(129, 141, 207) color: rgb(129, 141, 207)
CMYK cmyk(38%, 32%, 0%, 19%) —
HSV hsv(231, 38%, 81%) —
HWB hwb(231 50% 19%) color: hwb(231 50% 19%)
OKLCH oklch(0.6603 0.0993 275.46) color: oklch(0.6603 0.0993 275.46)
Lab lab(60.09 11.85 -35.38) color: lab(60.09 11.85 -35.38)
LCH lch(60.09 37.31 288.52) color: lch(60.09 37.31 288.52)

Color Theory

Complementary

Triadic

Analogous

Tetradic (Square)

Split-Complementary

Accessibility (WCAG)

White text on color

Black text on color

Color on white bg

Colored text

Contrast Ratios

vs White 3.16:1
vs Black 6.64:1

AA Normal (4.5:1)

on White: FAIL ✗ on Black: PASS ✓

AA Large (3:1)

on White: PASS ✓ on Black: PASS ✓

AAA Normal (7:1)

on White: FAIL ✗

Best text on this color: black

Color Blindness Simulation

Protanopia (Red-blind)

#8686BF — rgb(134, 134, 191)

Deuteranopia (Green-blind)

#8685BB — rgb(134, 133, 187)

Tritanopia (Blue-blind)

#82B2B0 — rgb(130, 178, 176)

Tints & Shades

Tints (Lighter →)

← Shades (Darker)

Saturation (0% → 100%)

CSS Code Snippets

background

background-color: hsl(231, 45%, 66%);

text

color: hsl(231, 45%, 66%);

border

border: 2px solid hsl(231, 45%, 66%);

gradient light

background: linear-gradient(to right, hsl(231, 45%, 86%), hsl(231, 45%, 66%));

gradient dark

background: linear-gradient(to right, hsl(231, 45%, 66%), hsl(231, 45%, 46%))

hex

background-color: #818DCF;

tailwind

bg-[hsl(231,45%,66%)]

box shadow

box-shadow: 0 4px 6px -1px hsl(231, 45%, 66%, 0.4);

css variable

--color-primary: hsl(231, 45%, 66%);

Related Colors

#9399BE

231,25,66

#7081E1

231,65,66

#4150AA

231,45,46

#CBD0EB

231,45,86

#81A0CF

216,45,66

#819ACF

221,45,66

#8381CF

241,45,66

#8981CF

246,45,66

Use Cases for Blue

Corporate branding Trust signals Tech products Social media Primary buttons

Frequently Asked Questions

What are all the color codes for HSL(231, 45%, 66%)?

HEX: #818DCF | RGB: rgb(129, 141, 207) | CMYK: 38%, 32%, 0%, 19% | HSV: 231°, 38%, 81%. Copy any format from the conversion table above.

What colors go well with #818DCF?

The complementary color is HSL(51, 45%, 66%). For a triadic harmony, use hues 231°, 351°, and 111°. For analogous combinations, try hues 201° and 261°. See the Color Harmony section above for complete palettes with previews.

How do I use HSL(231, 45%, 66%) in CSS?

As HSL: color: hsl(231, 45%, 66%); — As HEX: color: #818DCF; — As RGB: color: rgb(129, 141, 207); — Tailwind CSS: bg-[hsl(231,45%,66%)] — CSS variable: --color-primary: hsl(231, 45%, 66%);