#57558D
Closest named color: Twilight (#4E518B). oklch(47.7% 0.089 284.1), rgb(87, 85, 141).
Aa
White text reads best on this color (6.79:1).
About this color
#57558D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.089 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.019 away. White text reads best on it, at 6.79:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.08:1 |
| White text | 6.79:1 |
Values
| HEX | #57558D |
| RGB | rgb(87, 85, 141) |
| HSL | hsl(242, 25%, 44%) |
| OKLCH | oklch(47.7% 0.089 284.1) |
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 #57558D | 6.79:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #57558D | 3.08:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #57558D text on white | 6.79:1 | AA | Lc 83.4 | Fine for body text |
| #57558D text on black | 3.08:1 | AA large text | Lc -18.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D7D7E9
oklch(88.5% 0.025 285.9)
-
Step 300
300
#BDBDDC
oklch(80.8% 0.043 285.4)
-
Step 400
400
#9B9BCB
oklch(70.7% 0.07 284.5)
-
Step 500
500
#8382BD
oklch(63.1% 0.088 284.4)
-
Step 600
600
#6D6BA9
oklch(55.6% 0.095 284.3)
-
Step 700
700 (this color)
#57558D
oklch(47.7% 0.089 284.1)
-
Step 800
800
#4A4976
oklch(42.7% 0.074 283.8)
-
Step 900
900
#3E3D5F
oklch(37.7% 0.058 284.6)
-
Step 950
950
#242438
oklch(27% 0.037 283.7)
#57558D 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) | #435D8F | 0.033 |
| Deuteranopia (no green cones) | #41598C | 0.032 |
| Tritanopia (no blue cones) | #48606A | 0.077 |
| Achromatopsia (no color) | #5B5B5B | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57558D
#57558D
oklch(47.7% 0.089 284.1)
- #655F18
#655F18
oklch(47.7% 0.09 104.4)
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 #57558D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.019
- Dusk #4E5481 ΔE 0.024
- Dusky Blue #475F94 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.039
- Dusty Grape #545775 ΔE 0.042
- Denim #3B638C ΔE 0.051
- YInMn Blue #415A77 ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.054
Use #57558D 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.