#51429C
Closest named color: Blueberry (#464196). oklch(44.4% 0.141 286.8), rgb(81, 66, 156).
Aa
White text reads best on this color (8.04:1).
About this color
#51429C is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.141 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.021 away. White text reads best on it, at 8.04:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.60:1 |
| White text | 8.04:1 |
Values
| HEX | #51429C |
| RGB | rgb(81, 66, 156) |
| HSL | hsl(250, 41%, 44%) |
| OKLCH | oklch(44.4% 0.141 286.8) |
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 #51429C | 8.04:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #51429C | 2.60:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #51429C text on white | 8.04:1 | AAA | Lc 87.6 | Fine for body text |
| #51429C text on black | 2.60:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D6D5F7
oklch(88.4% 0.047 286.8)
-
Step 300
300
#BCB9F4
oklch(80.9% 0.083 286.7)
-
Step 400
400
#9B93EE
oklch(70.7% 0.131 286.6)
-
Step 500
500
#8575E8
oklch(63.1% 0.167 287)
-
Step 600
600
#705AD7
oklch(55.6% 0.184 286.9)
-
Step 700
700
#5E49BA
oklch(49.1% 0.17 286.9)
-
Step 800
800 (this color)
#51429C
oklch(44.4% 0.141 286.8)
-
Step 900
900
#3F3578
oklch(37.7% 0.11 286.7)
-
Step 950
950
#252046
oklch(27.1% 0.069 286.9)
#51429C 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) | #06529F | 0.078 |
| Deuteranopia (no green cones) | #044E9A | 0.078 |
| Tritanopia (no blue cones) | #385668 | 0.118 |
| Achromatopsia (no color) | #505050 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51429C
#51429C
oklch(44.4% 0.141 286.8)
- #5A5700
#5A5700
oklch(44.5% 0.096 107.4)
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 #51429C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.021
- Dark Slate Blue #483D8B ΔE 0.034
- Rebecca Purple #663399 ΔE 0.048
- Twilight #4E518B ΔE 0.052
- Blue With A Hint Of Purple #533CC6 ΔE 0.068
- Cobalt #1E488F ΔE 0.070
- Dusk #4E5481 ΔE 0.071
- Dusk Blue #26538D ΔE 0.074
Use #51429C 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.