#5121BB
Closest named color: Violet Blue (#510AC9). oklch(42.7% 0.216 287.3), rgb(81, 33, 187).
Aa
White text reads best on this color (9.19:1).
About this color
#5121BB is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.216 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Violet Blue (#510AC9), ΔE 0.027 away. White text reads best on it, at 9.19:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.216) |
| Temperature | cool |
| Nearest name | Violet Blue (#510AC9) |
| Black text | 2.28:1 |
| White text | 9.19:1 |
Values
| HEX | #5121BB |
| RGB | rgb(81, 33, 187) |
| HSL | hsl(259, 70%, 43%) |
| OKLCH | oklch(42.7% 0.216 287.3) |
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 #5121BB | 9.19:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #5121BB | 2.28:1 | Fails | Lc 14.1 | Not readable |
| #5121BB text on white | 9.19:1 | AAA | Lc 89.9 | Fine for body text |
| #5121BB text on black | 2.28:1 | Fails | Lc -12.4 | Not readable |
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 800.
-
Step 50
50
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E8E7FF
oklch(93.6% 0.032 287.7)
-
Step 200
200
#D6D4FF
oklch(88.5% 0.059 287.3)
-
Step 300
300
#BCB7FF
oklch(80.9% 0.101 287.1)
-
Step 400
400
#9C8EFF
oklch(70.8% 0.161 287.2)
-
Step 500
500
#876BFF
oklch(63.1% 0.211 287.5)
-
Step 600
600
#753FFF
oklch(55.6% 0.261 287.4)
-
Step 700
700
#6421E8
oklch(49.1% 0.261 287.1)
-
Step 800
800 (this color)
#5121BB
oklch(42.7% 0.216 287.3)
-
Step 900
900
#422594
oklch(37.7% 0.169 287.2)
-
Step 950
950
#261856
oklch(27% 0.106 287.4)
#5121BB 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) | #004BBF | 0.101 |
| Deuteranopia (no green cones) | #0043B8 | 0.094 |
| Tritanopia (no blue cones) | #1E5070 | 0.174 |
| Achromatopsia (no color) | #484848 | 0.217 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5121BB
#5121BB
oklch(42.7% 0.216 287.3)
- #555200
#555200
oklch(42.8% 0.092 107.3)
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 #5121BB, closest first.
No curated palette has a color within ΔE 0.04 of #5121BB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Violet Blue #510AC9 ΔE 0.027
- Chrysanthemum #560BAD ΔE 0.035
- Purple Blue #5D21D0 ΔE 0.040
- Imperial Purple #480CA8 ΔE 0.045
- Indigo Blue #3A18B1 ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Blurple #5539CC ΔE 0.050
- Majorelle Blue #3F37C9 ΔE 0.050
Use #5121BB 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.