#51548A
Closest named color: Twilight (#4E518B). oklch(46.8% 0.087 280), rgb(81, 84, 138).
Aa
White text reads best on this color (7.03:1).
About this color
#51548A is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.087 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.011 away. White text reads best on it, at 7.03:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #51548A |
| RGB | rgb(81, 84, 138) |
| HSL | hsl(237, 26%, 43%) |
| OKLCH | oklch(46.8% 0.087 280) |
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 #51548A | 7.03:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #51548A | 2.98:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #51548A text on white | 7.03:1 | AAA | Lc 84.3 | Fine for body text |
| #51548A text on black | 2.98:1 | Fails | Lc -17.7 | 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 700.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D8E9
oklch(88.6% 0.023 280.6)
-
Step 300
300
#BBBEDC
oklch(80.9% 0.042 280.9)
-
Step 400
400
#989CCA
oklch(70.6% 0.067 280.6)
-
Step 500
500
#7F84BD
oklch(63.2% 0.086 279.8)
-
Step 600
600
#696DA9
oklch(55.7% 0.093 280)
-
Step 700
700 (this color)
#51548A
oklch(46.8% 0.087 280)
-
Step 800
800
#474A76
oklch(42.7% 0.073 279.9)
-
Step 900
900
#3C3E5F
oklch(37.7% 0.056 280.7)
-
Step 950
950
#232438
oklch(26.9% 0.037 281.4)
#51548A 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) | #425B8C | 0.026 |
| Deuteranopia (no green cones) | #3E5789 | 0.027 |
| Tritanopia (no blue cones) | #405F68 | 0.077 |
| Achromatopsia (no color) | #595959 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51548A
#51548A
oklch(46.8% 0.087 280)
- #665B16
#665B16
oklch(46.8% 0.087 99.9)
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 #51548A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.011
- Dusk #4E5481 ΔE 0.016
- Dusky Blue #475F94 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.033
- Dusty Grape #545775 ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.046
- Denim #3B638C ΔE 0.048
Use #51548A 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.