#57407D
Closest named color: Dark Slate Blue (#483D8B). oklch(42.5% 0.1 299.5), rgb(87, 64, 125).
Aa
White text reads best on this color (8.62:1).
About this color
#57407D is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.100 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.037 away. White text reads best on it, at 8.62:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.43:1 |
| White text | 8.62:1 |
Values
| HEX | #57407D |
| RGB | rgb(87, 64, 125) |
| HSL | hsl(263, 32%, 37%) |
| OKLCH | oklch(42.5% 0.1 299.5) |
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 #57407D | 8.62:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #57407D | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #57407D text on white | 8.62:1 | AAA | Lc 89.5 | Fine for body text |
| #57407D text on black | 2.43:1 | Fails | Lc -12.8 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DCD5EC
oklch(88.6% 0.032 299.6)
-
Step 300
300
#C6B9E2
oklch(81% 0.059 299.6)
-
Step 400
400
#A993D3
oklch(70.6% 0.095 299.8)
-
Step 500
500
#9478C7
oklch(63.1% 0.119 299.3)
-
Step 600
600
#7F5FB4
oklch(55.6% 0.131 299.5)
-
Step 700
700
#6B4E9B
oklch(49% 0.122 299.3)
-
Step 800
800 (this color)
#57407D
oklch(42.5% 0.1 299.5)
-
Step 900
900
#483765
oklch(37.7% 0.079 299.7)
-
Step 950
950
#2A213B
oklch(27.1% 0.048 299.1)
#57407D 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) | #2D4C7F | 0.066 |
| Deuteranopia (no green cones) | #324B7B | 0.061 |
| Tritanopia (no blue cones) | #4F4B58 | 0.079 |
| Achromatopsia (no color) | #4C4C4C | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57407D
#57407D
oklch(42.5% 0.1 299.5)
- #485600
#485600
oklch(42.6% 0.101 120)
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 #57407D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.037
- Twilight #4E518B ΔE 0.048
- Blueberry #464196 ΔE 0.050
- Dusk #4E5481 ΔE 0.055
- Rebecca Purple #663399 ΔE 0.062
- Dusty Grape #545775 ΔE 0.070
- Dusk Blue #26538D ΔE 0.079
- Cobalt #1E488F ΔE 0.081
Use #57407D 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.