#57598B
Closest named color: Dusk (#4E5481). oklch(48.4% 0.08 281.2), rgb(87, 89, 139).
Aa
White text reads best on this color (6.54:1).
About this color
#57598B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.080 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.025 away. White text reads best on it, at 6.54:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.20:1 |
| White text | 6.54:1 |
Values
| HEX | #57598B |
| RGB | rgb(87, 89, 139) |
| HSL | hsl(238, 23%, 44%) |
| OKLCH | oklch(48.4% 0.08 281.2) |
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 #57598B | 6.54:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #57598B | 3.20:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #57598B text on white | 6.54:1 | AA | Lc 82.4 | Fine for body text |
| #57598B text on black | 3.20:1 | AA large text | Lc -19.5 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E7
oklch(88.5% 0.021 279.9)
-
Step 300
300
#BCBEDA
oklch(80.9% 0.039 282.2)
-
Step 400
400
#999DC7
oklch(70.8% 0.061 280.4)
-
Step 500
500
#8184B9
oklch(63.1% 0.079 281.4)
-
Step 600
600
#6B6DA5
oklch(55.6% 0.086 281.6)
-
Step 700
700 (this color)
#57598B
oklch(48.4% 0.08 281.2)
-
Step 800
800
#494A73
oklch(42.7% 0.068 282.1)
-
Step 900
900
#3D3E5D
oklch(37.7% 0.053 282.1)
-
Step 950
950
#232536
oklch(27% 0.032 278.9)
#57598B 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) | #495F8D | 0.024 |
| Deuteranopia (no green cones) | #475C8A | 0.023 |
| Tritanopia (no blue cones) | #49636B | 0.071 |
| Achromatopsia (no color) | #5D5D5D | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57598B
#57598B
oklch(48.4% 0.08 281.2)
- #686025
#686025
oklch(48.4% 0.08 101.6)
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 #57598B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.025
- Dusky Blue #475F94 ΔE 0.027
- Twilight #4E518B ΔE 0.028
- Dusty Grape #545775 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.038
- Denim #3B638C ΔE 0.043
- YInMn Blue #415A77 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.052
Use #57598B 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.