#57396C
Closest named color: Dark Slate Blue (#483D8B). oklch(40.2% 0.09 310), rgb(87, 57, 108).
Aa
White text reads best on this color (9.51:1).
About this color
#57396C is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.090 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.058 away. White text reads best on it, at 9.51:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.51:1 |
Values
| HEX | #57396C |
| RGB | rgb(87, 57, 108) |
| HSL | hsl(275, 31%, 32%) |
| OKLCH | oklch(40.2% 0.09 310) |
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 #57396C | 9.51:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #57396C | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #57396C text on white | 9.51:1 | AAA | Lc 91.9 | Preferred for body text |
| #57396C text on black | 2.20:1 | Fails | Lc -10.5 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F2
oklch(93.6% 0.016 310.1)
-
Step 200
200
#DFD4E8
oklch(88.5% 0.03 310.1)
-
Step 300
300
#CBB8DA
oklch(80.9% 0.051 310.2)
-
Step 400
400
#B192C8
oklch(70.7% 0.084 310.4)
-
Step 500
500
#9D76BA
oklch(63% 0.108 309.9)
-
Step 600
600
#885EA6
oklch(55.5% 0.117 309.9)
-
Step 700
700
#734D8E
oklch(49% 0.109 309.9)
-
Step 800
800 (this color)
#57396C
oklch(40.2% 0.09 310)
-
Step 900
900
#4D365D
oklch(37.6% 0.07 310.4)
-
Step 950
950
#2D2037
oklch(27% 0.045 309.5)
#57396C 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) | #2E446E | 0.069 |
| Deuteranopia (no green cones) | #35466B | 0.064 |
| Tritanopia (no blue cones) | #54414D | 0.064 |
| Achromatopsia (no color) | #454545 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57396C
#57396C
oklch(40.2% 0.09 310)
- #385117
#385117
oklch(40.1% 0.089 129.6)
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 #57396C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.058
- Twilight #4E518B ΔE 0.075
- Blueberry #464196 ΔE 0.075
- Dusk #4E5481 ΔE 0.076
- Rebecca Purple #663399 ΔE 0.082
- Purple Brown #673A3F ΔE 0.083
- Dusty Grape #545775 ΔE 0.084
- Grape Purple #5D1451 ΔE 0.085
Use #57396C 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.