#57458B
Closest named color: Twilight (#4E518B). oklch(44.4% 0.112 293.1), rgb(87, 69, 139).
Aa
White text reads best on this color (7.98:1).
About this color
#57458B is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.112 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.034 away. White text reads best on it, at 7.98:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.62:1 |
| White text | 7.98:1 |
Values
| HEX | #57458B |
| RGB | rgb(87, 69, 139) |
| HSL | hsl(255, 34%, 41%) |
| OKLCH | oklch(44.4% 0.112 293.1) |
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 #57458B | 7.98:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #57458B | 2.62:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #57458B text on white | 7.98:1 | AAA | Lc 87.5 | Fine for body text |
| #57458B text on black | 2.62:1 | Fails | Lc -14.6 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#D9D5F0
oklch(88.4% 0.037 292.4)
-
Step 300
300
#C2B9E8
oklch(80.9% 0.066 293.6)
-
Step 400
400
#A394DC
oklch(70.7% 0.105 293.1)
-
Step 500
500
#8D78D2
oklch(63.1% 0.133 292.9)
-
Step 600
600
#785FBF
oklch(55.5% 0.145 293.1)
-
Step 700
700
#654EA5
oklch(49.1% 0.135 292.9)
-
Step 800
800 (this color)
#57458B
oklch(44.4% 0.112 293.1)
-
Step 900
900
#44376B
oklch(37.7% 0.087 293.3)
-
Step 950
950
#28213F
oklch(27.1% 0.055 293.1)
#57458B 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) | #2B518D | 0.065 |
| Deuteranopia (no green cones) | #2E4F89 | 0.061 |
| Tritanopia (no blue cones) | #4A5361 | 0.092 |
| Achromatopsia (no color) | #515151 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57458B
#57458B
oklch(44.4% 0.112 293.1)
- #545900
#545900
oklch(44.4% 0.099 113.5)
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 #57458B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.034
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.037
- Dusk #4E5481 ΔE 0.049
- Rebecca Purple #663399 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.067
- Dusty Grape #545775 ΔE 0.069
- Dusk Blue #26538D ΔE 0.070
Use #57458B 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.