#4F2588
Closest named color: Indigo (#4B0082). oklch(38.1% 0.155 298), rgb(79, 37, 136).
Aa
White text reads best on this color (10.75:1).
About this color
#4F2588 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.155 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.049 away. White text reads best on it, at 10.75:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #4F2588 |
| RGB | rgb(79, 37, 136) |
| HSL | hsl(265, 57%, 34%) |
| OKLCH | oklch(38.1% 0.155 298) |
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 #4F2588 | 10.75:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #4F2588 | 1.95:1 | Fails | Lc 9.7 | Not readable |
| #4F2588 text on white | 10.75:1 | AAA | Lc 94.2 | Preferred for body text |
| #4F2588 text on black | 1.95:1 | Fails | Lc -8.3 | 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
#F6F3FF
oklch(97% 0.016 297.5)
-
Step 100
100
#ECE6FE
oklch(93.7% 0.033 297.2)
-
Step 200
200
#DED1FF
oklch(88.6% 0.064 298)
-
Step 300
300
#C9B1FF
oklch(80.9% 0.111 298)
-
Step 400
400
#AF84FF
oklch(70.7% 0.177 297.9)
-
Step 500
500
#9E5CFF
oklch(63.1% 0.231 298.1)
-
Step 600
600
#8B34F2
oklch(55.6% 0.258 297.9)
-
Step 700
700
#7722D3
oklch(49.2% 0.241 298.1)
-
Step 800
800
#6021AA
oklch(42.6% 0.199 298)
-
Step 900
900 (this color)
#4F2588
oklch(38.1% 0.155 298)
-
Step 950
950
#2D174F
oklch(27% 0.098 297.5)
#4F2588 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) | #003E8B | 0.102 |
| Deuteranopia (no green cones) | #003D86 | 0.103 |
| Tritanopia (no blue cones) | #413E54 | 0.118 |
| Achromatopsia (no color) | #3E3E3E | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F2588
#4F2588
oklch(38.1% 0.155 298)
- #3F4800
#3F4800
oklch(38% 0.088 117.6)
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 #4F2588, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.054
- Rebecca Purple #663399 ΔE 0.062
- Imperial Purple #480CA8 ΔE 0.062
- Chrysanthemum #560BAD ΔE 0.065
- Blueberry #464196 ΔE 0.066
- Royal Purple #4B006E ΔE 0.070
- Indigo Blue #3A18B1 ΔE 0.083
Use #4F2588 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.