#51339A
Closest named color: Blueberry (#464196). oklch(41.8% 0.159 291.4), rgb(81, 51, 154).
Aa
White text reads best on this color (9.17:1).
About this color
#51339A is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.159 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.036 away. White text reads best on it, at 9.17:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Blueberry (#464196) |
| Black text | 2.29:1 |
| White text | 9.17:1 |
Values
| HEX | #51339A |
| RGB | rgb(81, 51, 154) |
| HSL | hsl(257, 50%, 40%) |
| OKLCH | oklch(41.8% 0.159 291.4) |
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 #51339A | 9.17:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #51339A | 2.29:1 | Fails | Lc 13.4 | Not readable |
| #51339A text on white | 9.17:1 | AAA | Lc 90.6 | Preferred for body text |
| #51339A text on black | 2.29:1 | Fails | Lc -11.7 | 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
#D9D4F9
oklch(88.6% 0.051 291.5)
-
Step 300
300
#C1B6F8
oklch(80.9% 0.093 291.8)
-
Step 400
400
#A28EF5
oklch(70.7% 0.148 291.1)
-
Step 500
500
#8E6DF1
oklch(63.1% 0.19 291.5)
-
Step 600
600
#7951E0
oklch(55.7% 0.206 291)
-
Step 700
700
#6740C2
oklch(49.1% 0.192 291.5)
-
Step 800
800 (this color)
#51339A
oklch(41.8% 0.159 291.4)
-
Step 900
900
#44307D
oklch(37.6% 0.125 291.2)
-
Step 950
950
#281D49
oklch(27% 0.079 291.8)
#51339A 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) | #00499D | 0.091 |
| Deuteranopia (no green cones) | #004698 | 0.091 |
| Tritanopia (no blue cones) | #3A4C62 | 0.127 |
| Achromatopsia (no color) | #484848 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51339A
#51339A
oklch(41.8% 0.159 291.4)
- #4F5100
#4F5100
oklch(41.9% 0.092 111.4)
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 #51339A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.037
- Rebecca Purple #663399 ΔE 0.040
- Chrysanthemum #560BAD ΔE 0.059
- Imperial Purple #480CA8 ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.074
- Indigo Blue #3A18B1 ΔE 0.074
- Sapphire #2138AB ΔE 0.075
Use #51339A 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.