#3A2573
Closest named color: Indigo (#4B0082). oklch(33.9% 0.127 290.3), rgb(58, 37, 115).
Aa
White text reads best on this color (12.41:1).
About this color
#3A2573 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.127 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.060 away. White text reads best on it, at 12.41:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.69:1 |
| White text | 12.41:1 |
Values
| HEX | #3A2573 |
| RGB | rgb(58, 37, 115) |
| HSL | hsl(256, 51%, 30%) |
| OKLCH | oklch(33.9% 0.127 290.3) |
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 #3A2573 | 12.41:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #3A2573 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #3A2573 text on white | 12.41:1 | AAA | Lc 97.8 | Preferred for body text |
| #3A2573 text on black | 1.69:1 | Fails | Lc 0.0 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FC
oklch(93.6% 0.028 290.2)
-
Step 200
200
#D8D4FA
oklch(88.5% 0.052 290.1)
-
Step 300
300
#C0B6FA
oklch(80.9% 0.095 290.8)
-
Step 400
400
#A18DF8
oklch(70.6% 0.153 290.5)
-
Step 500
500
#8C6DF4
oklch(63.1% 0.194 290.3)
-
Step 600
600
#7850E3
oklch(55.6% 0.211 290.4)
-
Step 700
700
#653FC5
oklch(49.1% 0.197 290.3)
-
Step 800
800
#5235A0
oklch(42.7% 0.164 290.1)
-
Step 900
900 (this color)
#3A2573
oklch(33.9% 0.127 290.3)
-
Step 950
950
#271D4A
oklch(27% 0.08 290.2)
#3A2573 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) | #003675 | 0.072 |
| Deuteranopia (no green cones) | #003271 | 0.071 |
| Tritanopia (no blue cones) | #283848 | 0.103 |
| Achromatopsia (no color) | #343434 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A2573
#3A2573
oklch(33.9% 0.127 290.3)
- #3A3B00
#3A3B00
oklch(34% 0.075 110.8)
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 #3A2573, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.060
- Royal Purple #4B006E ΔE 0.062
- Midnight Blue #191970 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.076
- Marine Blue #01386A ΔE 0.078
- Marine #042E60 ΔE 0.079
- Prussian Blue #1D3557 ΔE 0.080
- Twilight Blue #0A437A ΔE 0.089
Use #3A2573 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.