#57388A
Closest named color: Dark Slate Blue (#483D8B). oklch(42% 0.132 297.9), rgb(87, 56, 138).
Aa
White text reads best on this color (8.98:1).
About this color
#57388A is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.132 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.028 away. White text reads best on it, at 8.98:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.33:1 |
| White text | 8.98:1 |
Values
| HEX | #57388A |
| RGB | rgb(87, 56, 138) |
| HSL | hsl(263, 42%, 38%) |
| OKLCH | oklch(42% 0.132 297.9) |
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 #57388A | 8.98:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #57388A | 2.33:1 | Fails | Lc 13.7 | Not readable |
| #57388A text on white | 8.98:1 | AAA | Lc 90.3 | Preferred for body text |
| #57388A text on black | 2.33:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F7
oklch(93.6% 0.022 297.4)
-
Step 200
200
#DCD4F2
oklch(88.6% 0.042 297.7)
-
Step 300
300
#C6B6EC
oklch(80.8% 0.077 298.2)
-
Step 400
400
#AA8FE3
oklch(70.7% 0.123 298)
-
Step 500
500
#9671DB
oklch(63.1% 0.157 297.9)
-
Step 600
600
#8156C8
oklch(55.5% 0.171 298)
-
Step 700
700
#6D46AD
oklch(49.1% 0.158 297.7)
-
Step 800
800 (this color)
#57388A
oklch(42% 0.132 297.9)
-
Step 900
900
#493370
oklch(37.7% 0.102 298)
-
Step 950
950
#2B1E42
oklch(27% 0.066 298.6)
#57388A 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) | #0D498D | 0.094 |
| Deuteranopia (no green cones) | #1B4888 | 0.087 |
| Tritanopia (no blue cones) | #4B495B | 0.102 |
| Achromatopsia (no color) | #494949 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57388A
#57388A
oklch(42% 0.132 297.9)
- #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 #57388A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.028
- Rebecca Purple #663399 ΔE 0.038
- Blueberry #464196 ΔE 0.039
- Twilight #4E518B ΔE 0.065
- Dusk #4E5481 ΔE 0.079
- Cobalt #1E488F ΔE 0.084
- Chrysanthemum #560BAD ΔE 0.086
- Imperial Purple #480CA8 ΔE 0.091
Use #57388A 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.