#57316C
Closest named color: Dark Slate Blue (#483D8B). oklch(38.8% 0.104 312.2), rgb(87, 49, 108).
Aa
White text reads best on this color (10.18:1).
About this color
#57316C is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.104 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.062 away. White text reads best on it, at 10.18:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.06:1 |
| White text | 10.18:1 |
Values
| HEX | #57316C |
| RGB | rgb(87, 49, 108) |
| HSL | hsl(279, 38%, 31%) |
| OKLCH | oklch(38.8% 0.104 312.2) |
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 #57316C | 10.18:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #57316C | 2.06:1 | Fails | Lc 10.6 | Not readable |
| #57316C text on white | 10.18:1 | AAA | Lc 93.4 | Preferred for body text |
| #57316C text on black | 2.06:1 | Fails | Lc -9.1 | 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
#F8F4FB
oklch(97.2% 0.01 311.2)
-
Step 100
100
#EFE6F5
oklch(93.6% 0.022 312.2)
-
Step 200
200
#E3D1EE
oklch(88.4% 0.044 312.8)
-
Step 300
300
#D2B2E6
oklch(80.8% 0.08 312.3)
-
Step 400
400
#BB89D9
oklch(70.8% 0.125 312.1)
-
Step 500
500
#AA69CE
oklch(63.2% 0.159 312.3)
-
Step 600
600
#954DBB
oklch(55.5% 0.175 312.3)
-
Step 700
700
#7F3DA1
oklch(49% 0.162 312.4)
-
Step 800
800
#673483
oklch(42.8% 0.134 311.9)
-
Step 900
900 (this color)
#57316C
oklch(38.8% 0.104 312.2)
-
Step 950
950
#311C3D
oklch(27% 0.065 312.1)
#57316C 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) | #223F6E | 0.088 |
| Deuteranopia (no green cones) | #2E426A | 0.079 |
| Tritanopia (no blue cones) | #553B49 | 0.073 |
| Achromatopsia (no color) | #414141 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57316C
#57316C
oklch(38.8% 0.104 312.2)
- #2E4F05
#2E4F05
oklch(38.7% 0.104 132.1)
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 #57316C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.062
- Grape Purple #5D1451 ΔE 0.069
- Rebecca Purple #663399 ΔE 0.079
- Blueberry #464196 ΔE 0.081
- Rich Purple #720058 ΔE 0.087
- Royal Purple #4B006E ΔE 0.090
- Velvet #750851 ΔE 0.090
- Twilight #4E518B ΔE 0.091
Use #57316C 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.