#5A2178
Closest named color: Indigo (#4B0082). oklch(37.7% 0.145 311.4), rgb(90, 33, 120).
Aa
White text reads best on this color (10.91:1).
About this color
#5A2178 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.145 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.058 away. White text reads best on it, at 10.91:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.92:1 |
| White text | 10.91:1 |
Values
| HEX | #5A2178 |
| RGB | rgb(90, 33, 120) |
| HSL | hsl(279, 57%, 30%) |
| OKLCH | oklch(37.7% 0.145 311.4) |
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 #5A2178 | 10.91:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #5A2178 | 1.92:1 | Fails | Lc 9.4 | Not readable |
| #5A2178 text on white | 10.91:1 | AAA | Lc 94.6 | Preferred for body text |
| #5A2178 text on black | 1.92:1 | 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
#F9F3FD
oklch(97.2% 0.015 312.2)
-
Step 100
100
#F1E4FA
oklch(93.6% 0.032 311.7)
-
Step 200
200
#E6CEF7
oklch(88.4% 0.061 311.3)
-
Step 300
300
#D8ACF4
oklch(80.8% 0.109 311.8)
-
Step 400
400
#C47DEF
oklch(70.8% 0.174 311.4)
-
Step 500
500
#B454E9
oklch(63% 0.223 311.3)
-
Step 600
600
#A02FD7
oklch(55.6% 0.242 311.4)
-
Step 700
700
#891EBA
oklch(49.1% 0.225 311.5)
-
Step 800
800
#6F1E97
oklch(42.7% 0.186 311.2)
-
Step 900
900 (this color)
#5A2178
oklch(37.7% 0.145 311.4)
-
Step 950
950
#351546
oklch(27% 0.092 311.9)
#5A2178 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) | #003A7B | 0.127 |
| Deuteranopia (no green cones) | #163E76 | 0.119 |
| Tritanopia (no blue cones) | #56344A | 0.098 |
| Achromatopsia (no color) | #3D3D3D | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A2178
#5A2178
oklch(37.7% 0.145 311.4)
- #2C4C00
#2C4C00
oklch(37.7% 0.104 131.6)
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 #5A2178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.058
- Royal Purple #4B006E ΔE 0.060
- Rebecca Purple #663399 ΔE 0.069
- Grape Purple #5D1451 ΔE 0.069
- Dark Slate Blue #483D8B ΔE 0.073
- Rich Purple #720058 ΔE 0.080
- Purple #800080 ΔE 0.082
- Plum Purple #4E0550 ΔE 0.084
Use #5A2178 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.