#51498F
Closest named color: Twilight (#4E518B). oklch(44.8% 0.112 286.2), rgb(81, 73, 143).
Aa
White text reads best on this color (7.77:1).
About this color
#51498F is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.112 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.024 away. White text reads best on it, at 7.77:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.69:1 |
| White text | 7.77:1 |
Values
| HEX | #51498F |
| RGB | rgb(81, 73, 143) |
| HSL | hsl(247, 32%, 42%) |
| OKLCH | oklch(44.8% 0.112 286.2) |
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 #51498F | 7.77:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #51498F | 2.69:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #51498F text on white | 7.77:1 | AAA | Lc 86.9 | Fine for body text |
| #51498F text on black | 2.69:1 | Fails | Lc -15.2 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F6
oklch(93.5% 0.019 286)
-
Step 200
200
#D6D6F1
oklch(88.4% 0.037 285.6)
-
Step 300
300
#BCBBEA
oklch(80.9% 0.066 285.8)
-
Step 400
400
#9B97DF
oklch(70.8% 0.104 285.9)
-
Step 500
500
#847BD6
oklch(63.1% 0.134 286.4)
-
Step 600
600
#6E63C3
oklch(55.6% 0.145 285.9)
-
Step 700
700
#5C51A8
oklch(49% 0.135 286.1)
-
Step 800
800 (this color)
#51498F
oklch(44.8% 0.112 286.2)
-
Step 900
900
#3F396D
oklch(37.7% 0.087 286.7)
-
Step 950
950
#242240
oklch(27% 0.055 285.1)
#51498F 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) | #2D5492 | 0.052 |
| Deuteranopia (no green cones) | #2C508D | 0.051 |
| Tritanopia (no blue cones) | #3F5765 | 0.093 |
| Achromatopsia (no color) | #525252 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51498F
#51498F
oklch(44.8% 0.112 286.2)
- #5C5700
#5C5700
oklch(44.7% 0.095 105.8)
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 #51498F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.024
- Blueberry #464196 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.037
- Dusk #4E5481 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.054
- Dusk Blue #26538D ΔE 0.058
- Dusky Blue #475F94 ΔE 0.060
- Rebecca Purple #663399 ΔE 0.064
Use #51498F 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.