HSL(243, 77%, 40%)
Blue — Blue color
Adjust Color
Color Information
Color Name
Blue
Color Family
Blue
Warm / Cool
🔵 Cool
Temperature
9000K
CSS Class
bg-[hsl(243,77%,40%)]
Color Conversions
| Format | Value | CSS Usage | |
|---|---|---|---|
| HSL | hsl(243, 77%, 40%) | color: hsl(243, 77%, 40%) | |
| HEX | #1F17B5 | color: #1F17B5 | |
| RGB | rgb(31, 23, 181) | color: rgb(31, 23, 181) | |
| CMYK | cmyk(83%, 87%, 0%, 29%) | — | |
| HSV | hsv(243, 87%, 71%) | — | |
| HWB | hwb(243 9% 29%) | color: hwb(243 9% 29%) | |
| OKLCH | oklch(0.3733 0.2261 269.68) | color: oklch(0.3733 0.2261 269.68) | |
| Lab | lab(24.45 55.31 -78.17) | color: lab(24.45 55.31 -78.17) | |
| LCH | lch(24.45 95.76 305.28) | color: lch(24.45 95.76 305.28) |
Color Theory
Accessibility (WCAG)
White text on color
Black text on color
Colored text
Contrast Ratios
AA Normal (4.5:1)
AA Large (3:1)
AAA Normal (7:1)
Best text on this color: white
Color Blindness Simulation
Protanopia (Red-blind)
#1C1B8F — rgb(28, 27, 143)
Deuteranopia (Green-blind)
#1C1D86 — rgb(28, 29, 134)
Tritanopia (Blue-blind)
#1F716A — rgb(31, 113, 106)
Tints & Shades
CSS Code Snippets
background
background-color: hsl(243, 77%, 40%);
text
color: hsl(243, 77%, 40%);
border
border: 2px solid hsl(243, 77%, 40%);
gradient light
background: linear-gradient(to right, hsl(243, 77%, 60%), hsl(243, 77%, 40%));
gradient dark
background: linear-gradient(to right, hsl(243, 77%, 40%), hsl(243, 77%, 20%))
hex
background-color: #1F17B5;
tailwind
bg-[hsl(243,77%,40%)]
box shadow
box-shadow: 0 4px 6px -1px hsl(243, 77%, 40%, 0.4);
css variable
--color-primary: hsl(243, 77%, 40%);
Related Colors
Use Cases for Blue
Frequently Asked Questions
What are all the color codes for HSL(243, 77%, 40%)?
HEX: #1F17B5 | RGB: rgb(31, 23, 181) | CMYK: 83%, 87%, 0%, 29% | HSV: 243°, 87%, 71%. Copy any format from the conversion table above.
What colors go well with #1F17B5?
The complementary color is HSL(63, 77%, 40%). For a triadic harmony, use hues 243°, 3°, and 123°. For analogous combinations, try hues 213° and 273°. See the Color Harmony section above for complete palettes with previews.
How do I use HSL(243, 77%, 40%) in CSS?
As HSL: color: hsl(243, 77%, 40%); — As HEX: color: #1F17B5; — As RGB: color: rgb(31, 23, 181); — Tailwind CSS: bg-[hsl(243,77%,40%)] — CSS variable: --color-primary: hsl(243, 77%, 40%);