#51359D
Closest named color: Blueberry (#464196). oklch(42.3% 0.16 290.2), rgb(81, 53, 157).
Aa
White text reads best on this color (8.95:1).
About this color
#51359D is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.160 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.034 away. White text reads best on it, at 8.95:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Blueberry (#464196) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #51359D |
| RGB | rgb(81, 53, 157) |
| HSL | hsl(256, 50%, 41%) |
| OKLCH | oklch(42.3% 0.16 290.2) |
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 #51359D | 8.95:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #51359D | 2.34:1 | Fails | Lc 13.9 | Not readable |
| #51359D text on white | 8.95:1 | AAA | Lc 90.0 | Preferred for body text |
| #51359D text on black | 2.34:1 | Fails | Lc -12.2 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4FA
oklch(88.5% 0.052 290.1)
-
Step 300
300
#BFB7F9
oklch(80.9% 0.093 289.7)
-
Step 400
400
#A18EF6
oklch(70.7% 0.149 290.5)
-
Step 500
500
#8C6EF3
oklch(63.2% 0.191 290.2)
-
Step 600
600
#7751E1
oklch(55.5% 0.208 290.1)
-
Step 700
700
#6540C4
oklch(49.1% 0.194 290.3)
-
Step 800
800 (this color)
#51359D
oklch(42.3% 0.16 290.2)
-
Step 900
900
#43317E
oklch(37.8% 0.125 289.9)
-
Step 950
950
#271D4A
oklch(27% 0.08 290.2)
#51359D 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) | #004BA0 | 0.090 |
| Deuteranopia (no green cones) | #00479B | 0.088 |
| Tritanopia (no blue cones) | #394E64 | 0.129 |
| Achromatopsia (no color) | #494949 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51359D
#51359D
oklch(42.3% 0.16 290.2)
- #515200
#515200
oklch(42.4% 0.093 110.6)
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 #51359D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.034
- Dark Slate Blue #483D8B ΔE 0.038
- Rebecca Purple #663399 ΔE 0.040
- Chrysanthemum #560BAD ΔE 0.060
- Imperial Purple #480CA8 ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.068
- Sapphire #2138AB ΔE 0.073
- Indigo Blue #3A18B1 ΔE 0.074
Use #51359D 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.