#57368E
Closest named color: Dark Slate Blue (#483D8B). oklch(41.9% 0.14 297.3), rgb(87, 54, 142).
Aa
White text reads best on this color (9.03:1).
About this color
#57368E is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.140 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.030 away. White text reads best on it, at 9.03:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.32:1 |
| White text | 9.03:1 |
Values
| HEX | #57368E |
| RGB | rgb(87, 54, 142) |
| HSL | hsl(263, 45%, 38%) |
| OKLCH | oklch(41.9% 0.14 297.3) |
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 #57368E | 9.03:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #57368E | 2.32:1 | Fails | Lc 13.6 | Not readable |
| #57368E text on white | 9.03:1 | AAA | Lc 90.4 | Preferred for body text |
| #57368E text on black | 2.32:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DCD3F4
oklch(88.4% 0.046 297.9)
-
Step 300
300
#C6B6EF
oklch(80.9% 0.081 297.4)
-
Step 400
400
#AA8EE8
oklch(70.8% 0.131 297.3)
-
Step 500
500
#966FE0
oklch(63.1% 0.166 297.3)
-
Step 600
600
#8154CE
oklch(55.6% 0.181 297.1)
-
Step 700
700
#6E43B2
oklch(49.1% 0.169 297.7)
-
Step 800
800 (this color)
#57368E
oklch(41.9% 0.14 297.3)
-
Step 900
900
#493273
oklch(37.8% 0.108 297.3)
-
Step 950
950
#2B1E43
oklch(27.1% 0.068 298)
#57368E 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) | #004991 | 0.100 |
| Deuteranopia (no green cones) | #10488C | 0.095 |
| Tritanopia (no blue cones) | #4A495C | 0.109 |
| Achromatopsia (no color) | #494949 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57368E
#57368E
oklch(41.9% 0.14 297.3)
- #495300
#495300
oklch(41.9% 0.097 117.4)
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 #57368E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.030
- Rebecca Purple #663399 ΔE 0.033
- Blueberry #464196 ΔE 0.039
- Twilight #4E518B ΔE 0.071
- Chrysanthemum #560BAD ΔE 0.078
- Imperial Purple #480CA8 ΔE 0.083
- Dusk #4E5481 ΔE 0.086
- Cobalt #1E488F ΔE 0.086
Use #57368E 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.