#51499C
Closest named color: Blueberry (#464196). oklch(45.7% 0.13 284.3), rgb(81, 73, 156).
Aa
White text reads best on this color (7.54:1).
About this color
#51499C is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.130 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.030 away. White text reads best on it, at 7.54:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.78:1 |
| White text | 7.54:1 |
Values
| HEX | #51499C |
| RGB | rgb(81, 73, 156) |
| HSL | hsl(246, 36%, 45%) |
| OKLCH | oklch(45.7% 0.13 284.3) |
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 #51499C | 7.54:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #51499C | 2.78:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #51499C text on white | 7.54:1 | AAA | Lc 86.0 | Fine for body text |
| #51499C text on black | 2.78:1 | Fails | Lc -16.1 | 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
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D5D6F5
oklch(88.5% 0.042 284)
-
Step 300
300
#BABAF1
oklch(80.8% 0.077 284.5)
-
Step 400
400
#9895EA
oklch(70.7% 0.123 284.4)
-
Step 500
500
#8179E3
oklch(63.2% 0.155 284.5)
-
Step 600
600
#6B5FD1
oklch(55.6% 0.17 284.2)
-
Step 700
700
#5A4EB5
oklch(49.2% 0.157 284.3)
-
Step 800
800 (this color)
#51499C
oklch(45.7% 0.13 284.3)
-
Step 900
900
#3D3775
oklch(37.7% 0.103 284.7)
-
Step 950
950
#232144
oklch(27% 0.064 283.9)
#51499C 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) | #20579F | 0.062 |
| Deuteranopia (no green cones) | #1C529A | 0.063 |
| Tritanopia (no blue cones) | #375B6B | 0.111 |
| Achromatopsia (no color) | #545454 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51499C
#51499C
oklch(45.7% 0.13 284.3)
- #605900
#605900
oklch(45.6% 0.096 104.3)
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 #51499C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.030
- Twilight #4E518B ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.043
- Dusk #4E5481 ΔE 0.058
- Rebecca Purple #663399 ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.059
- Dusky Blue #475F94 ΔE 0.064
- Dusk Blue #26538D ΔE 0.064
Use #51499C 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.