#51547A
Closest named color: Dusk (#4E5481). oklch(45.9% 0.062 280.2), rgb(81, 84, 122).
Aa
White text reads best on this color (7.24:1).
About this color
#51547A is a medium-dark, muted purple. In OKLCH its lightness is 46%, its chroma 0.062 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.012 away. White text reads best on it, at 7.24:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.89:1 |
| White text | 7.24:1 |
Values
| HEX | #51547A |
| RGB | rgb(81, 84, 122) |
| HSL | hsl(236, 20%, 40%) |
| OKLCH | oklch(45.9% 0.062 280.2) |
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 #51547A | 7.24:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #51547A | 2.89:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #51547A text on white | 7.24:1 | AAA | Lc 85.1 | Fine for body text |
| #51547A text on black | 2.89:1 | Fails | Lc -16.9 | 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 700.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D7D8E4
oklch(88.5% 0.016 282.2)
-
Step 300
300
#BCBFD4
oklch(80.9% 0.03 279.3)
-
Step 400
400
#9A9EBF
oklch(70.7% 0.048 279.7)
-
Step 500
500
#8286AE
oklch(63.1% 0.06 280.1)
-
Step 600
600
#6B6F9A
oklch(55.5% 0.067 279.9)
-
Step 700
700 (this color)
#51547A
oklch(45.9% 0.062 280.2)
-
Step 800
800
#494C6B
oklch(42.7% 0.051 279.7)
-
Step 900
900
#3D3F57
oklch(37.6% 0.041 280.5)
-
Step 950
950
#242533
oklch(27% 0.026 281.3)
#51547A 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) | #49587C | 0.015 |
| Deuteranopia (no green cones) | #475579 | 0.015 |
| Tritanopia (no blue cones) | #465B61 | 0.055 |
| Achromatopsia (no color) | #575757 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51547A
#51547A
oklch(45.9% 0.062 280.2)
- #60592E
#60592E
oklch(46% 0.062 100.2)
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 #51547A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.012
- Dusty Grape #545775 ΔE 0.015
- YInMn Blue #415A77 ΔE 0.029
- Twilight #4E518B ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.047
- Denim #3B638C ΔE 0.050
Use #51547A 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.