#581F7F
Closest named color: Indigo (#4B0082). oklch(37.7% 0.154 307.6), rgb(88, 31, 127).
Aa
White text reads best on this color (10.95:1).
About this color
#581F7F is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.154 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 10.95:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.91:1 |
| White text | 10.95:1 |
Values
| HEX | #581F7F |
| RGB | rgb(88, 31, 127) |
| HSL | hsl(276, 61%, 31%) |
| OKLCH | oklch(37.7% 0.154 307.6) |
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 #581F7F | 10.95:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #581F7F | 1.91:1 | Fails | Lc 9.4 | Not readable |
| #581F7F text on white | 10.95:1 | AAA | Lc 94.5 | Preferred for body text |
| #581F7F text on black | 1.91:1 | Fails | Lc -8.1 | 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
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#F0E4FC
oklch(93.5% 0.034 308.1)
-
Step 200
200
#E5CEFB
oklch(88.5% 0.066 308.1)
-
Step 300
300
#D5ACFB
oklch(80.9% 0.117 307.7)
-
Step 400
400
#C07CF8
oklch(70.7% 0.185 307.7)
-
Step 500
500
#B052F5
oklch(63.1% 0.236 307.4)
-
Step 600
600
#9C29E3
oklch(55.5% 0.256 307.5)
-
Step 700
700
#8615C6
oklch(49.1% 0.24 307.6)
-
Step 800
800
#6D19A0
oklch(42.8% 0.198 307.7)
-
Step 900
900 (this color)
#581F7F
oklch(37.7% 0.154 307.6)
-
Step 950
950
#33144A
oklch(26.9% 0.098 307.4)
#581F7F 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) | #003A82 | 0.123 |
| Deuteranopia (no green cones) | #003D7D | 0.126 |
| Tritanopia (no blue cones) | #52364D | 0.109 |
| Achromatopsia (no color) | #3C3C3C | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #581F7F
#581F7F
oklch(37.7% 0.154 307.6)
- #334B00
#334B00
oklch(37.9% 0.098 127.6)
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 #581F7F, 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 0.059
- Rebecca Purple #663399 ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.070
- Chrysanthemum #560BAD ΔE 0.078
- Grape Purple #5D1451 ΔE 0.081
- Imperial Purple #480CA8 ΔE 0.081
- Blueberry #464196 ΔE 0.085
Use #581F7F 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.