#57406B
Closest named color: Dusk (#4E5481). oklch(41.5% 0.075 308), rgb(87, 64, 107).
Aa
White text reads best on this color (8.93:1).
About this color
#57406B is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.075 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.060 away. White text reads best on it, at 8.93:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #57406B |
| RGB | rgb(87, 64, 107) |
| HSL | hsl(272, 25%, 34%) |
| OKLCH | oklch(41.5% 0.075 308) |
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 #57406B | 8.93:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #57406B | 2.35:1 | Fails | Lc 13.6 | Not readable |
| #57406B text on white | 8.93:1 | AAA | Lc 90.4 | Preferred for body text |
| #57406B text on black | 2.35:1 | 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
#F6F4F8
oklch(97% 0.006 308.4)
-
Step 100
100
#ECE8F1
oklch(93.7% 0.013 306)
-
Step 200
200
#DDD5E6
oklch(88.4% 0.025 306.9)
-
Step 300
300
#C8BAD7
oklch(81% 0.043 307.1)
-
Step 400
400
#AD95C3
oklch(70.7% 0.071 308.3)
-
Step 500
500
#987BB3
oklch(63.1% 0.088 307.7)
-
Step 600
600
#83639F
oklch(55.6% 0.097 308)
-
Step 700
700
#6F5288
oklch(49.1% 0.09 308.1)
-
Step 800
800 (this color)
#57406B
oklch(41.5% 0.075 308)
-
Step 900
900
#4A395A
oklch(37.7% 0.059 307.4)
-
Step 950
950
#2B2134
oklch(26.8% 0.037 308.1)
#57406B 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) | #37496D | 0.054 |
| Deuteranopia (no green cones) | #3C4A6A | 0.050 |
| Tritanopia (no blue cones) | #544650 | 0.054 |
| Achromatopsia (no color) | #494949 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57406B
#57406B
oklch(41.5% 0.075 308)
- #405324
#405324
oklch(41.4% 0.075 127.6)
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 #57406B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.062
- Twilight #4E518B ΔE 0.063
- Dusty Grape #545775 ΔE 0.065
- Purple Brown #673A3F ΔE 0.076
- Blueberry #464196 ΔE 0.077
- YInMn Blue #415A77 ΔE 0.077
- Brownish Purple #76424E ΔE 0.078
Use #57406B 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.