#51489A
Closest named color: Blueberry (#464196). oklch(45.4% 0.129 285), rgb(81, 72, 154).
Aa
White text reads best on this color (7.65:1).
About this color
#51489A is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.129 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.027 away. White text reads best on it, at 7.65:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.74:1 |
| White text | 7.65:1 |
Values
| HEX | #51489A |
| RGB | rgb(81, 72, 154) |
| HSL | hsl(247, 36%, 44%) |
| OKLCH | oklch(45.4% 0.129 285) |
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 #51489A | 7.65:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #51489A | 2.74:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #51489A text on white | 7.65:1 | AAA | Lc 86.4 | Fine for body text |
| #51489A text on black | 2.74:1 | Fails | Lc -15.7 | Dividers and decoration only |
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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F4
oklch(88.5% 0.041 285.5)
-
Step 300
300
#BBBAF0
oklch(80.8% 0.076 285.4)
-
Step 400
400
#9995E9
oklch(70.7% 0.121 285)
-
Step 500
500
#8279E2
oklch(63.2% 0.154 285)
-
Step 600
600
#6C5FD0
oklch(55.6% 0.168 284.7)
-
Step 700
700
#5B4EB4
oklch(49.2% 0.156 284.9)
-
Step 800
800 (this color)
#51489A
oklch(45.4% 0.129 285)
-
Step 900
900
#3D3774
oklch(37.6% 0.101 284.9)
-
Step 950
950
#242144
oklch(27.1% 0.064 285.2)
#51489A 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) | #20569D | 0.063 |
| Deuteranopia (no green cones) | #1D5198 | 0.063 |
| Tritanopia (no blue cones) | #395A6A | 0.109 |
| Achromatopsia (no color) | #535353 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51489A
#51489A
oklch(45.4% 0.129 285)
- #5F5900
#5F5900
oklch(45.5% 0.097 105.1)
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 #51489A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.027
- Twilight #4E518B ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.040
- Rebecca Purple #663399 ΔE 0.057
- Dusk #4E5481 ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.060
- Dusk Blue #26538D ΔE 0.064
- Dusky Blue #475F94 ΔE 0.066
Use #51489A 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.