#581CF5
Closest named color: Blue Purple (#5A06EF). oklch(49.1% 0.278 281.5), rgb(88, 28, 245).
Aa
White text reads best on this color (7.24:1).
About this color
#581CF5 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.278 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Purple (#5A06EF), ΔE 0.017 away. White text reads best on it, at 7.24:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.278) |
| Temperature | cool |
| Nearest name | Blue Purple (#5A06EF) |
| Black text | 2.89:1 |
| White text | 7.24:1 |
Values
| HEX | #581CF5 |
| RGB | rgb(88, 28, 245) |
| HSL | hsl(257, 92%, 54%) |
| OKLCH | oklch(49.1% 0.278 281.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #581CF5 | 7.24:1 | AAA | Lc -88.2 | Fine for body text |
| Black text on #581CF5 | 2.89:1 | Fails | Lc 20.8 | Dividers and decoration only |
| #581CF5 text on white | 7.24:1 | AAA | Lc 83.2 | Fine for body text |
| #581CF5 text on black | 2.89:1 | Fails | Lc -18.7 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E6E8FF
oklch(93.6% 0.031 281.8)
-
Step 200
200
#D2D5FF
oklch(88.4% 0.058 281.9)
-
Step 300
300
#B5B9FF
oklch(80.8% 0.099 281.4)
-
Step 400
400
#9292FF
oklch(70.8% 0.157 281.6)
-
Step 500
500
#7A71FF
oklch(63.1% 0.204 281.7)
-
Step 600
600
#664AFF
oklch(55.6% 0.252 281.4)
-
Step 700
700 (this color)
#581CF5
oklch(49.1% 0.278 281.5)
-
Step 800
800
#471FC6
oklch(42.7% 0.23 281.5)
-
Step 900
900
#3A259B
oklch(37.7% 0.179 281.7)
-
Step 950
950
#21185B
oklch(27% 0.114 281.7)
#581CF5 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #005EFA | 0.110 |
| Deuteranopia (no green cones) | #004FF2 | 0.092 |
| Tritanopia (no blue cones) | #006892 | 0.219 |
| Achromatopsia (no color) | #575757 | 0.280 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #581CF5
#581CF5
oklch(49.1% 0.278 281.5)
- #6D6200
#6D6200
oklch(49.1% 0.103 101.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #581CF5, closest first.
No curated palette has a color within ΔE 0.04 of #581CF5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Purple #5A06EF ΔE 0.017
- Purply Blue #661AEE ΔE 0.029
- Purpley Blue #5F34E7 ΔE 0.035
- Burple #6832E3 ΔE 0.048
- Light Royal Blue #3A2EFE ΔE 0.049
- Purple Blue #5D21D0 ΔE 0.060
- Blurple #5539CC ΔE 0.068
- Violet Blue #510AC9 ΔE 0.076
Use #581CF5 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.