#4F308D
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.146 294.1), rgb(79, 48, 141).
Aa
White text reads best on this color (9.81:1).
About this color
#4F308D is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.146 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.032 away. White text reads best on it, at 9.81:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.81:1 |
Values
| HEX | #4F308D |
| RGB | rgb(79, 48, 141) |
| HSL | hsl(260, 49%, 37%) |
| OKLCH | oklch(40% 0.146 294.1) |
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 #4F308D | 9.81:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #4F308D | 2.13:1 | Fails | Lc 11.7 | Not readable |
| #4F308D text on white | 9.81:1 | AAA | Lc 92.3 | Preferred for body text |
| #4F308D text on black | 2.13:1 | Fails | Lc -10.1 | 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 900.
-
Step 50
50
#F6F4FF
oklch(97.2% 0.015 294.5)
-
Step 100
100
#EBE6FE
oklch(93.6% 0.033 295.3)
-
Step 200
200
#DBD2FE
oklch(88.5% 0.061 294.5)
-
Step 300
300
#C4B3FF
oklch(80.8% 0.107 294.1)
-
Step 400
400
#A888FF
oklch(70.7% 0.17 294)
-
Step 500
500
#9562FF
oklch(63% 0.222 294)
-
Step 600
600
#8240F0
oklch(55.6% 0.244 294)
-
Step 700
700
#6E2FD1
oklch(49.1% 0.227 293.9)
-
Step 800
800
#5A2AA9
oklch(42.8% 0.188 294.2)
-
Step 900
900 (this color)
#4F308D
oklch(40% 0.146 294.1)
-
Step 950
950
#2A194E
oklch(26.9% 0.093 294)
#4F308D 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) | #004490 | 0.092 |
| Deuteranopia (no green cones) | #00428B | 0.092 |
| Tritanopia (no blue cones) | #3E465A | 0.116 |
| Achromatopsia (no color) | #444444 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F308D
#4F308D
oklch(40% 0.146 294.1)
- #474D00
#474D00
oklch(40.1% 0.091 114.8)
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 #4F308D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.032
- Blueberry #464196 ΔE 0.043
- Rebecca Purple #663399 ΔE 0.049
- Imperial Purple #480CA8 ΔE 0.068
- Chrysanthemum #560BAD ΔE 0.069
- Indigo #4B0082 ΔE 0.073
- Indigo Blue #3A18B1 ΔE 0.082
- Cobalt #1E488F ΔE 0.083
Use #4F308D 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.