#4F2987
Closest named color: Dark Slate Blue (#483D8B). oklch(38.5% 0.149 297.5), rgb(79, 41, 135).
Aa
White text reads best on this color (10.50:1).
About this color
#4F2987 is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.149 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.046 away. White text reads best on it, at 10.50:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.99:1 |
| White text | 10.50:1 |
Values
| HEX | #4F2987 |
| RGB | rgb(79, 41, 135) |
| HSL | hsl(264, 53%, 35%) |
| OKLCH | oklch(38.5% 0.149 297.5) |
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 #4F2987 | 10.50:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #4F2987 | 1.99:1 | Fails | Lc 10.1 | Not readable |
| #4F2987 text on white | 10.50:1 | AAA | Lc 93.8 | Preferred for body text |
| #4F2987 text on black | 1.99:1 | Fails | Lc -8.7 | 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
#ECE6FD
oklch(93.6% 0.031 297.7)
-
Step 200
200
#DDD1FE
oklch(88.5% 0.063 297.3)
-
Step 300
300
#C8B1FF
oklch(80.8% 0.111 297.4)
-
Step 400
400
#AE84FF
oklch(70.6% 0.177 297.4)
-
Step 500
500
#9D5EFE
oklch(63.2% 0.227 297.6)
-
Step 600
600
#893AEE
oklch(55.6% 0.249 297.5)
-
Step 700
700
#752ACF
oklch(49.2% 0.23 297.6)
-
Step 800
800
#5F26A7
oklch(42.8% 0.19 297.7)
-
Step 900
900 (this color)
#4F2987
oklch(38.5% 0.149 297.5)
-
Step 950
950
#2D184E
oklch(27.1% 0.095 297.6)
#4F2987 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) | #003F8A | 0.099 |
| Deuteranopia (no green cones) | #003E85 | 0.099 |
| Tritanopia (no blue cones) | #413F54 | 0.114 |
| Achromatopsia (no color) | #3F3F3F | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F2987
#4F2987
oklch(38.5% 0.149 297.5)
- #404900
#404900
oklch(38.4% 0.089 117.5)
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 #4F2987, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.046
- Indigo #4B0082 ΔE 0.057
- Rebecca Purple #663399 ΔE 0.058
- Blueberry #464196 ΔE 0.060
- Imperial Purple #480CA8 ΔE 0.067
- Chrysanthemum #560BAD ΔE 0.069
- Royal Purple #4B006E ΔE 0.075
- Indigo Blue #3A18B1 ΔE 0.086
Use #4F2987 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.