#581F7E
Closest named color: Indigo (#4B0082). oklch(37.6% 0.153 308), rgb(88, 31, 126).
Aa
White text reads best on this color (10.98:1).
About this color
#581F7E is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.153 and its hue 308°. 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 10.98:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.91:1 |
| White text | 10.98:1 |
Values
| HEX | #581F7E |
| RGB | rgb(88, 31, 126) |
| HSL | hsl(276, 61%, 31%) |
| OKLCH | oklch(37.6% 0.153 308) |
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 #581F7E | 10.98:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #581F7E | 1.91:1 | Fails | Lc 9.3 | Not readable |
| #581F7E text on white | 10.98:1 | AAA | Lc 94.6 | Preferred for body text |
| #581F7E text on black | 1.91:1 | Fails | Lc -8.0 | 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
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#F0E4FC
oklch(93.5% 0.034 308.1)
-
Step 200
200
#E5CEFA
oklch(88.4% 0.064 308.6)
-
Step 300
300
#D5ACFA
oklch(80.8% 0.116 308)
-
Step 400
400
#C07CF7
oklch(70.7% 0.183 307.9)
-
Step 500
500
#B152F4
oklch(63.1% 0.235 307.9)
-
Step 600
600
#9D29E2
oklch(55.6% 0.256 308.1)
-
Step 700
700
#8617C4
oklch(49.1% 0.237 308)
-
Step 800
800
#6D199F
oklch(42.7% 0.197 308)
-
Step 900
900 (this color)
#581F7E
oklch(37.6% 0.153 308)
-
Step 950
950
#34144A
oklch(27% 0.098 308.4)
#581F7E 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) | #003A81 | 0.124 |
| Deuteranopia (no green cones) | #003D7C | 0.126 |
| Tritanopia (no blue cones) | #52354D | 0.106 |
| Achromatopsia (no color) | #3C3C3C | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #581F7E
#581F7E
oklch(37.6% 0.153 308)
- #324A00
#324A00
oklch(37.5% 0.098 127.7)
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 #581F7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.049
- Royal Purple #4B006E ΔE 0.058
- Rebecca Purple #663399 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.071
- Grape Purple #5D1451 ΔE 0.080
- Chrysanthemum #560BAD ΔE 0.080
- Imperial Purple #480CA8 ΔE 0.083
- Blueberry #464196 ΔE 0.085
Use #581F7E 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.