#51417A
Closest named color: Dark Slate Blue (#483D8B). oklch(41.9% 0.093 295), rgb(81, 65, 122).
Aa
White text reads best on this color (8.79:1).
About this color
#51417A is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.093 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.036 away. White text reads best on it, at 8.79:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #51417A |
| RGB | rgb(81, 65, 122) |
| HSL | hsl(257, 30%, 37%) |
| OKLCH | oklch(41.9% 0.093 295) |
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 #51417A | 8.79:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #51417A | 2.38:1 | Fails | Lc 14.0 | Not readable |
| #51417A text on white | 8.79:1 | AAA | Lc 90.0 | Fine for body text |
| #51417A text on black | 2.38:1 | Fails | Lc -12.3 | 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
#F6F5FA
oklch(97.2% 0.007 295.5)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#DAD6EC
oklch(88.6% 0.03 294.1)
-
Step 300
300
#C3BAE1
oklch(80.9% 0.055 295.7)
-
Step 400
400
#A496D2
oklch(70.7% 0.088 294.8)
-
Step 500
500
#8E7BC6
oklch(63.1% 0.112 294.6)
-
Step 600
600
#7963B2
oklch(55.6% 0.121 295)
-
Step 700
700
#665299
oklch(49.1% 0.112 294.9)
-
Step 800
800 (this color)
#51417A
oklch(41.9% 0.093 295)
-
Step 900
900
#453964
oklch(37.7% 0.073 295.5)
-
Step 950
950
#28223B
oklch(27.1% 0.046 294.1)
#51417A 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) | #2F4B7C | 0.054 |
| Deuteranopia (no green cones) | #324A79 | 0.051 |
| Tritanopia (no blue cones) | #484C57 | 0.077 |
| Achromatopsia (no color) | #4A4A4A | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51417A
#51417A
oklch(41.9% 0.093 295)
- #4C5203
#4C5203
oklch(41.9% 0.093 114.6)
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 #51417A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.036
- Twilight #4E518B ΔE 0.048
- Blueberry #464196 ΔE 0.050
- Dusk #4E5481 ΔE 0.053
- Dusty Grape #545775 ΔE 0.067
- Dusk Blue #26538D ΔE 0.072
- Rebecca Purple #663399 ΔE 0.072
- Cobalt #1E488F ΔE 0.073
Use #51417A 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.