#5B309A
Closest named color: Rebecca Purple (#663399). oklch(42.4% 0.164 297.6), rgb(91, 48, 154).
Aa
White text reads best on this color (8.99:1).
About this color
#5B309A is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.164 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.023 away. White text reads best on it, at 8.99:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.33:1 |
| White text | 8.99:1 |
Values
| HEX | #5B309A |
| RGB | rgb(91, 48, 154) |
| HSL | hsl(264, 52%, 40%) |
| OKLCH | oklch(42.4% 0.164 297.6) |
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 #5B309A | 8.99:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #5B309A | 2.33:1 | Fails | Lc 13.9 | Not readable |
| #5B309A text on white | 8.99:1 | AAA | Lc 90.1 | Preferred for body text |
| #5B309A text on black | 2.33:1 | Fails | Lc -12.2 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE6FB
oklch(93.6% 0.029 298.9)
-
Step 200
200
#DDD2F9
oklch(88.5% 0.054 298.2)
-
Step 300
300
#C7B4F7
oklch(80.9% 0.095 297.2)
-
Step 400
400
#AC89F3
oklch(70.6% 0.154 297.6)
-
Step 500
500
#9967EE
oklch(63% 0.196 297.6)
-
Step 600
600
#854ADD
oklch(55.7% 0.212 297.4)
-
Step 700
700
#7139C0
oklch(49.1% 0.199 297.5)
-
Step 800
800 (this color)
#5B309A
oklch(42.4% 0.164 297.6)
-
Step 900
900
#4B2D7B
oklch(37.7% 0.127 297.7)
-
Step 950
950
#2C1B48
oklch(27% 0.081 298.2)
#5B309A 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) | #00499D | 0.109 |
| Deuteranopia (no green cones) | #004898 | 0.110 |
| Tritanopia (no blue cones) | #4B4961 | 0.125 |
| Achromatopsia (no color) | #494949 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B309A
#5B309A
oklch(42.4% 0.164 297.6)
- #4A5500
#4A5500
oklch(42.5% 0.099 118)
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 #5B309A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.023
- Dark Slate Blue #483D8B ΔE 0.049
- Blueberry #464196 ΔE 0.050
- Chrysanthemum #560BAD ΔE 0.057
- Imperial Purple #480CA8 ΔE 0.069
- Grape #7209B7 ΔE 0.072
- Blue With A Hint Of Purple #533CC6 ΔE 0.076
- Bluey Purple #6241C7 ΔE 0.081
Use #5B309A 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.