#51369C
Closest named color: Blueberry (#464196). oklch(42.4% 0.158 290.2), rgb(81, 54, 156).
Aa
White text reads best on this color (8.90:1).
About this color
#51369C is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.158 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.032 away. White text reads best on it, at 8.90:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Blueberry (#464196) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #51369C |
| RGB | rgb(81, 54, 156) |
| HSL | hsl(256, 49%, 41%) |
| OKLCH | oklch(42.4% 0.158 290.2) |
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 #51369C | 8.90:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #51369C | 2.35:1 | Fails | Lc 14.0 | Not readable |
| #51369C text on white | 8.90:1 | AAA | Lc 89.9 | Fine for body text |
| #51369C text on black | 2.35:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4F9
oklch(88.5% 0.051 290.3)
-
Step 300
300
#BFB7F8
oklch(80.9% 0.091 289.8)
-
Step 400
400
#A18EF5
oklch(70.7% 0.148 290.6)
-
Step 500
500
#8C6EF1
oklch(63.1% 0.189 290.5)
-
Step 600
600
#7752E0
oklch(55.6% 0.205 290.1)
-
Step 700
700
#6541C2
oklch(49.1% 0.19 290.5)
-
Step 800
800 (this color)
#51369C
oklch(42.4% 0.158 290.2)
-
Step 900
900
#43317D
oklch(37.7% 0.123 290.1)
-
Step 950
950
#271E49
oklch(27.1% 0.077 289.9)
#51369C 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) | #004C9F | 0.089 |
| Deuteranopia (no green cones) | #00479A | 0.088 |
| Tritanopia (no blue cones) | #394E64 | 0.127 |
| Achromatopsia (no color) | #4A4A4A | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51369C
#51369C
oklch(42.4% 0.158 290.2)
- #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 #51369C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.036
- Rebecca Purple #663399 ΔE 0.040
- Chrysanthemum #560BAD ΔE 0.063
- Imperial Purple #480CA8 ΔE 0.067
- Blue With A Hint Of Purple #533CC6 ΔE 0.069
- Sapphire #2138AB ΔE 0.073
- Indigo Blue #3A18B1 ΔE 0.076
Use #51369C 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.