#5A2F78
Closest named color: Dark Slate Blue (#483D8B). oklch(39.6% 0.124 309), rgb(90, 47, 120).
Aa
White text reads best on this color (9.94:1).
About this color
#5A2F78 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.124 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.053 away. White text reads best on it, at 9.94:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.94:1 |
Values
| HEX | #5A2F78 |
| RGB | rgb(90, 47, 120) |
| HSL | hsl(275, 44%, 33%) |
| OKLCH | oklch(39.6% 0.124 309) |
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 #5A2F78 | 9.94:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #5A2F78 | 2.11:1 | Fails | Lc 11.3 | Not readable |
| #5A2F78 text on white | 9.94:1 | AAA | Lc 92.7 | Preferred for body text |
| #5A2F78 text on black | 2.11:1 | Fails | Lc -9.8 | 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
#F8F3FC
oklch(97.1% 0.013 310.5)
-
Step 100
100
#EFE5F8
oklch(93.5% 0.027 309.2)
-
Step 200
200
#E3D0F4
oklch(88.4% 0.053 309)
-
Step 300
300
#D2B0EF
oklch(80.8% 0.094 308.9)
-
Step 400
400
#BC85E6
oklch(70.8% 0.148 309.2)
-
Step 500
500
#AB62DF
oklch(63.2% 0.19 308.9)
-
Step 600
600
#9643CC
oklch(55.5% 0.207 309)
-
Step 700
700
#8034B1
oklch(49.1% 0.192 308.8)
-
Step 800
800
#682C8F
oklch(42.6% 0.159 309)
-
Step 900
900 (this color)
#5A2F78
oklch(39.6% 0.124 309)
-
Step 950
950
#321943
oklch(27% 0.079 309.6)
#5A2F78 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) | #14417A | 0.106 |
| Deuteranopia (no green cones) | #264376 | 0.093 |
| Tritanopia (no blue cones) | #563D4F | 0.087 |
| Achromatopsia (no color) | #434343 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A2F78
#5A2F78
oklch(39.6% 0.124 309)
- #345100
#345100
oklch(39.7% 0.106 129.4)
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 #5A2F78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.053
- Rebecca Purple #663399 ΔE 0.059
- Blueberry #464196 ΔE 0.070
- Grape Purple #5D1451 ΔE 0.079
- Indigo #4B0082 ΔE 0.082
- Royal Purple #4B006E ΔE 0.086
- Twilight #4E518B ΔE 0.089
- Rich Purple #720058 ΔE 0.090
Use #5A2F78 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.